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Truck

From Wikipedia, in a visual modern way
Freightliner M2 dump truck
Freightliner M2 dump truck
A Mack Titan road train in Australia
A Mack Titan road train in Australia

A truck or lorry is a motor vehicle designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature body-on-frame construction, with a cabin that is independent of the payload portion of the vehicle. Smaller varieties may be mechanically similar to some automobiles. Commercial trucks can be very large and powerful and may be configured to be mounted with specialized equipment, such as in the case of refuse trucks, fire trucks, concrete mixers, and suction excavators. In American English, a commercial vehicle without a trailer or other articulation is formally a "straight truck" while one designed specifically to pull a trailer is not a truck but a "tractor".[1]

The majority of trucks currently in use are still powered by diesel engines, although small- to medium-size trucks with gasoline engines exist in the US, Canada, and Mexico. The market-share of electrically powered trucks is growing rapidly, expected to reach 7% globally by 2027, and electric motive force already predominates among both the largest and smallest trucks.[2] In the European Union, vehicles with a gross combination mass of up to 3.5 t (3.4 long tons; 3.9 short tons) are known as light commercial vehicles, and those over as large goods vehicles.

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Motor vehicle

Motor vehicle

A motor vehicle, also known as motorized vehicle or automotive vehicle, is a self-propelled land vehicle, commonly wheeled, that does not operate on rails and is used for the transportation of people or cargo.

Cargo

Cargo

Cargo consists of goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. Cargo was originally a shipload but now covers all types of freight, including transport by rail, van, truck, or intermodal container. The term cargo is also used in case of goods in the cold-chain, because the perishable inventory is always in transit towards a final end-use, even when it is held in cold storage or other similar climate-controlled facilities. The term freight is commonly used to describe the movements of flows of goods being transported by any mode of transportation.

Body-on-frame

Body-on-frame

Body-on-frame, also known as ladder frame construction, is a common motor vehicle construction method, whereby a separate body or coach is mounted on a strong and relatively rigid vehicle frame or chassis that carries the powertrain and to which the wheels and their suspension, brakes, and steering are mounted. While this was the original method of building automobiles, body-on-frame construction is now used mainly for heavy trucks, pickups, and predominantly large SUVs.

Concrete mixer

Concrete mixer

A concrete mixer is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete. A typical concrete mixer uses a revolving drum to mix the components. For smaller volume works, portable concrete mixers are often used so that the concrete can be made at the construction site, giving the workers ample time to use the concrete before it hardens. An alternative to a machine is mixing concrete by hand. This is usually done in a wheelbarrow; however, several companies have recently begun to sell modified tarps for this purpose.

Suction excavator

Suction excavator

A suction excavator or vacuum excavator is a construction vehicle that removes heavy debris or other materials from a hole on land.

Tractor unit

Tractor unit

A tractor unit is a characteristically heavy-duty towing engine that provides motive power for hauling a towed or trailered load. These fall into two categories: heavy- and medium-duty military and commercial rear-wheel-drive semi-tractors used for hauling semi-trailers, and very heavy-duty typically off-road-capable, often 6×6, military and commercial tractor units, including ballast tractors.

Diesel engine

Diesel engine

The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is called a compression-ignition engine. This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine or a gas engine.

Electric truck

Electric truck

An electric truck is an electric vehicle powered by batteries designed to transport cargo, carry specialized payloads, or perform other utilitarian work.

Light commercial vehicle

Light commercial vehicle

A light commercial vehicle (LCV) in the European Union, Australia and New Zealand is a commercial carrier vehicle with a gross vehicle weight of no more than 3.5 metric tons (tonnes). The LCV designation is also occasionally used in both Canada and Ireland.

Large goods vehicle

Large goods vehicle

A large goods vehicle (LGV), or heavy goods vehicle (HGV), in the European Union (EU) is any lorry with a gross combination mass (GCM) of over 3,500 kg (7,716 lb). Sub-category N2 is used for vehicles between 3,500 kg and 12,000 kg (26,455 lb) and N3 for all goods vehicles over 12,000 kg as defined in Directive 2001/116/EC. The term medium goods vehicle is used within parts of the UK government to refer to goods vehicles of between 3,500 and 7,500 kg which according to the EU are also "large goods vehicles."

History

Steam wagons

A Sentinel steam wagon
A Sentinel steam wagon

Trucks and cars have a common ancestor: the steam-powered fardier Nicolas-Joseph Cugnot built in 1769. However, steam wagons were not common until the mid-19th century. The roads of the time, built for horse and carriages, limited these vehicles to very short hauls, usually from a factory to the nearest railway station. The first semi-trailer appeared in 1881, towed by a steam tractor manufactured by De Dion-Bouton. Steam-powered wagons were sold in France and the United States until the eve of World War I, and 1935 in the United Kingdom, when a change in road tax rules made them uneconomic against the new diesel lorries.

Internal combustion

In 1895 Karl Benz designed and built the first internal combustion truck. Later that year some of Benz's trucks were modified to become busses by Netphener. A year later, in 1896, another internal combustion engine truck was built by Gottlieb Daimler, the Daimler Motor Lastwagen.[3] Other companies, such as Peugeot, Renault and Büssing, also built their own versions. The first truck in the United States was built by Autocar in 1899 and was available with 5 or 8 horsepower (4 or 6 kW) engines.[4] Trucks of the era mostly used two-cylinder engines and had a carrying capacity of 1.5 to 2 t (3,300 to 4,400 lb). After World War I, several advances were made: electric starters, and 4, 6, and 8 cylinder engines.

Diesel engines

Although it had been invented in 1897, the diesel engine did not appear in production trucks until Benz introduced it in 1923.[5] The diesel engine was not common in trucks in Europe until the 1930s. In the United States, Autocar introduced diesel engines for heavy applications in the mid-1930s. Demand was high enough that Autocar launched the "DC" model (diesel conventional) in 1939. However, it took much longer for diesel engines to be broadly accepted in the US: gasoline engines were still in use on heavy trucks in the 1970s.[6][7]

Electric Motors

President Joe Biden test driving the Ford F-150 Lightning all-electric pick up at Ford's Rouge Electric Vehicle Center
President Joe Biden test driving the Ford F-150 Lightning all-electric pick up at Ford's Rouge Electric Vehicle Center

Electrically powered trucks predate internal combustion ones and have been continuously available since the mid-19th-century. In the 1920s Autocar Trucks was the first of the major truck manufacturers to offer a range of electric trucks for sale.[8] Electric trucks were successful for urban delivery roles and as specialized work vehicles like forklifts and pushback tugs. The higher energy density of liquid fuels soon led to the decline of electric-powered trucks in favor of, first, gasoline, and then diesel and CNG-fueled engines until battery technology advanced in the 2000s when new chemistries and higher-volume production broadened the range of applicability of electric propulsion to trucks in many more roles. Today, manufacturers are electrifying all trucks ahead of national regulatory requirements, with long-range over-the-road trucks being the most challenging.[9][10]

Etymology

Truck is used in American English, and is common in Canada, Australia, New Zealand, Pakistan and South Africa, while lorry is the equivalent in British English, and is the usual term in countries like Ireland, Malaysia, Singapore and India.

The first known usage of "truck" was in 1611 when it referred to the small strong wheels on ships' cannon carriages, and comes from "Trokhos" (Greek) = "wheel". In its extended usage, it came to refer to carts for carrying heavy loads, a meaning known since 1771. Its expanded application to "motor-powered load carrier" has been in usage since 1930, shortened from "motor truck", which dates back to 1901.[11][12]

"Lorry" has a more uncertain origin, but probably has its roots in the rail transport industry, where the word is known to have been used in 1838 to refer to a type of truck (a goods wagon as in British usage, not a bogie as in the American), specifically a large flat wagon. It might derive from the verb lurry (to carry or drag along, or to lug) which was in use as early as 1664, but that association is not definitive.[13] The expanded meaning of lorry, "self-propelled vehicle for carrying goods", has been in usage since 1911.[14][15]

International variance

A Japanese concrete mixer
A Japanese concrete mixer

In the United States, Canada, and the Philippines, "truck" is usually reserved for commercial vehicles larger than regular passenger cars, but includes large SUVs, pickups, and other vehicles with an open load bed. In Australia, New Zealand and South Africa, the word "truck" is mostly reserved for larger vehicles. In Australia and New Zealand, a pickup truck is frequently called a ute (short for "utility" vehicle),[16] while in South Africa it is called a bakkie (Afrikaans: "small open container"). In the United Kingdom, India, Malaysia, Singapore, Ireland, and Hong Kong lorry is used instead of truck, but only for the medium and heavy types, while truck is used almost exclusively to refer to pickups.

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Sentinel Waggon Works

Sentinel Waggon Works

Sentinel Waggon Works Ltd was a British company based in Shrewsbury, Shropshire that made steam-powered lorries, railway locomotives, and later, diesel engined lorries, buses and locomotives.

Nicolas-Joseph Cugnot

Nicolas-Joseph Cugnot

Nicolas-Joseph Cugnot was a French inventor who built the world's first full-size and working self-propelled mechanical land-vehicle, the "Fardier à vapeur" – effectively the world's first automobile.

Semi-trailer truck

Semi-trailer truck

A semi-trailer truck, also known as a semitruck, is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a type of hitch called a fifth wheel.

Steam tractor

Steam tractor

A steam tractor is a vehicle powered by a steam engine which is used for pulling.

De Dion-Bouton

De Dion-Bouton

De Dion-Bouton was a French automobile manufacturer and railcar manufacturer operating from 1883 to 1953. The company was founded by the Marquis Jules-Albert de Dion, Georges Bouton, and Bouton's brother-in-law Charles Trépardoux.

Daimler Motor Lastwagen

Daimler Motor Lastwagen

The Daimler Motor-Lastwagen is the world's first truck, manufactured in the year 1896 by Daimler Motoren Gesellschaft and designed by Gottlieb Daimler.

Gottlieb Daimler

Gottlieb Daimler

Gottlieb Wilhelm Daimler was a German engineer, industrial designer and industrialist born in Schorndorf, in what is now Germany. He was a pioneer of internal-combustion engines and automobile development. He invented the high-speed liquid petroleum-fueled engine.

Daimler Motoren Gesellschaft

Daimler Motoren Gesellschaft

Daimler-Motoren-Gesellschaft was a German engineering company and later automobile manufacturer, in operation from 1890 until 1926. Founded by Gottlieb Daimler (1834–1900) and Wilhelm Maybach (1846–1929), it was based first in Cannstatt. Daimler died in 1900, and their business moved in 1903 to Stuttgart-Untertürkheim after the original factory was destroyed by fire, and again to Berlin in 1922. Other factories were located in Marienfelde and Sindelfingen.

Peugeot

Peugeot

Peugeot is a French brand of automobiles owned by Stellantis.

Renault

Renault

Groupe Renault is a French multinational automobile manufacturer established in 1899. The company produces a range of cars and vans, and in the past has manufactured trucks, tractors, tanks, buses/coaches, aircraft and aircraft engines, and autorail vehicles.

Büssing

Büssing

Büssing AG was a German bus and truck manufacturer, established in 1903 by Heinrich Büssing (1843–1929) in Braunschweig. It quickly evolved to one of the largest European producers, whose utility vehicles with the Brunswick Lion emblem were widely distributed, especially from the 1930s onwards. The company was taken over by MAN AG in 1971.

Autocar Company

Autocar Company

The Autocar Company is an American specialist manufacturer of severe-duty, Class 7 and Class 8 vocational trucks, with its headquarters in Birmingham, Alabama. Started in 1897 in Pittsburgh, Pennsylvania, as a manufacturer of Brass Era automobiles, and trucks from 1899, Autocar is the oldest surviving motor vehicle brand in the Western Hemisphere.

Types by size

Ultra light

Often produced as variations of golf cars, with internal combustion or battery electric drive, these are used typically for off-highway use on estates, golf courses, and parks. While not suitable for highway use some variations may be licensed as slow speed vehicles for operation on streets, generally as a body variation of a neighborhood electric vehicle. A few manufactures produce specialized chassis for this type of vehicle, while Zap Motors markets a version of their Xebra electric tricycle (licensable in the U.S. as a motorcycle).

Very light

Tata Super Ace in Indonesia
Tata Super Ace in Indonesia

Popular in Europe and Asia, many mini-trucks are factory redesigns of light automobiles, usually with monocoque bodies. Specialized designs with substantial frames such as the Italian Piaggio shown here are based upon Japanese designs (in this case by Daihatsu) and are popular for use in "old town" sections of European cities that often have very narrow alleyways.

Regardless of name, these small trucks serve a wide range of uses. In Japan, they are regulated under the Kei car laws, which allow vehicle owners a break in taxes for buying a smaller and less-powerful vehicle (currently, the engine is limited to 660 cc displacement). These vehicles are used as on-road utility vehicles in Japan. These Japanese-made mini trucks that were manufactured for on-road use are competing with off-road ATVs in the United States, and import regulations require that these mini trucks have a 25 mph (40 km/h) speed governor as they are classified as low-speed vehicles.[17] These vehicles have found uses in construction, large campuses (government, university, and industrial), agriculture, cattle ranches, amusement parks, and replacements for golf carts.[18]

SML truck on the road in Accra
SML truck on the road in Accra

Major mini truck manufacturers and their brands:

Light

Light trucks are car-sized (in the US, no more than 13,900 lb (6.3 t)) and are used by individuals and businesses alike. In the EU they may not weigh more than 3.5 t (7,700 lb) and are allowed to be driven with a driving licence for cars. Pickup trucks, called utes in Australia and New Zealand, are common in North America and some regions of Latin America, Asia, and Africa, but not so in Europe, where this size of commercial vehicle is most often made as vans.

Medium

Fuso Canter, 8th Generation in Taiwan
Fuso Canter, 8th Generation in Taiwan

Medium trucks are larger than light but smaller than heavy trucks. In the US, they are defined as weighing between 13,000 and 33,000 lb (5.9 and 15.0 t). For the UK and the EU the weight is between 3.5 to 7.5 t (7,700 to 16,500 lb). Local delivery and public service (dump trucks, garbage trucks and fire-fighting trucks) are normally around this size.

Heavy

A cement mixer is an example of a Class 8 heavy truck.
A cement mixer is an example of a Class 8 heavy truck.
Seddon Atkinson Stratos refuse compactor
Seddon Atkinson Stratos refuse compactor
In Pakistan the majority of trucks are colorful and decorated.
In Pakistan the majority of trucks are colorful and decorated.

Heavy trucks are the largest on-road trucks, Class 8. These include vocational applications such as heavy dump trucks, concrete pump trucks, and refuse hauling, as well as ubiquitous long-haul 4x2 and 6×4 tractor units.[19]

Road damage and wear increase very rapidly with the axle weight. The number of steering axles and the suspension type also influence the amount of the road wear. In many countries with good roads a six-axle truck may have a maximum weight of 44 t (97,000 lb) or more.

Off-road

ALMA antenna transporters are .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}20 m (65+2⁄3 ft) long, 10 m (32+7⁄9 ft) wide, weigh 130 t (127.9 long tons; 143.3 short tons) and drive on 28 tires.[20]
ALMA antenna transporters are 20 m (65+23 ft) long, 10 m (32+79 ft) wide, weigh 130 t (127.9 long tons; 143.3 short tons) and drive on 28 tires.[20]

Off-road trucks include standard, extra heavy-duty highway-legal trucks, typically outfitted with off-road features such as a front driving axle and special tires for applications such as logging and construction, and purpose-built off-road vehicles unconstrained by weight limits, such as the Liebherr T 282B mining truck.

Maximum sizes by country

Australia has complex regulations over weight and length, including axle spacing, type of axle/axle group, rear overhang, kingpin to rear of trailer, drawbar length, ground clearance, as well as height and width laws. These limits are some of the highest in the world, a B-double can weigh 62.5 t (61.5 long tons; 68.9 short tons) and be 25 m (82 ft) long, and road trains used in the outback can weigh 172 t (169.3 long tons; 189.6 short tons) and be 53.5 m (176 ft) long.[21][22]

The European Union also has complex regulations. The number and spacing of axles, steering, single or dual tires, and suspension type all affect maximum weights. Length of a truck, of a trailer, from axle to hitch point, kingpin to rear of trailer, and turning radius are all regulated. In additions, there are special rules for carrying containers, and countries can set their own rules for local traffic.[23]

The United States Federal Bridge Law deals with the relation between the gross weight of the truck, the number of axles, the weight on and the spacing between the axles that the truck can have on the Interstate highway system.[24] Each State determines the maximum permissible vehicle, combination, and axle weight on state and local roads.

Country Maximum
with three axles
With one trailer Maximum combination
Australia[21][22] 23 t (22.6 long tons; 25.4 short tons) 12 m (39 ft) 172 t (169.3 long tons; 189.6 short tons)
53.5 m (176 ft)
China[25] 25 t (24.6 long tons; 27.6 short tons)
12 m (39 ft)
49 t (48.2 long tons; 54.0 short tons)
16.5 m (54 ft)
55 t (54.1 long tons; 60.6 short tons)
18.75 m (62 ft)
EU[23] 26 t (25.6 long tons; 28.7 short tons)
12 m (39 ft)
16.5 m (54 ft) 44 t (43.3 long tons; 48.5 short tons)
18.75 m (62 ft)
Finland[26] 28 t (27.6 long tons; 30.9 short tons)
13 m (43 ft)
76 t (74.8 long tons; 83.8 short tons)
34.5 m (113 ft 2 in)
76 t (74.8 long tons; 83.8 short tons)
34.5 m (113 ft)
Ireland[27] 26 t (25.6 long tons; 28.7 short tons)
12 m (39 ft)
30 t (29.5 long tons; 33.1 short tons)
16.5 m (54 ft 2 in)
44 t (43.3 long tons; 48.5 short tons)
22 m (72 ft)
Sweden[28] 26 t (25.6 long tons; 28.7 short tons)
24 m (79 ft)
74 t (72.8 long tons; 81.6 short tons)
25.25 m (82 ft 10 in)
74 t (72.8 long tons; 81.6 short tons)
25.25 m (82.8 ft)
UK[29] 26 t (25.6 long tons; 28.7 short tons)
12 m (39 ft)
44 t (43.3 long tons; 48.5 short tons)
16.5 m (54 ft)
44 t (43.3 long tons; 48.5 short tons)
18.75 m (62 ft)
USA[30][31]
(Interstate)
54,000 lb (24 t)
45 ft (13.7 m)
80,000 lb (36 t)
none
80,000 lb (36 t)
none

Uniquely, the State of Michigan has a gross vehicle weight limit of 164,000 lb (74 t), which is twice the U.S. federal limit.[32][33][34] A measure to change the law was defeated in the Michigan Senate in 2019.[35][36][37][38][39]

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List of truck types

List of truck types

This List of truck types is intended to classify trucks and to provide links to articles on the various types. The three main classifications for road truck by weight are light trucks, medium trucks, and heavy trucks. Above this there are specialised very heavy trucks and transporters such as heavy haulers for moving oversized loads, and off-road heavy haul trucks used in and mining which are too large for highway use without escorts and special permits.

Might-E Truck

Might-E Truck

Might-E Truck is a fully electric, mid-sized work vehicle manufactured by Canadian Electric Vehicles in British Columbia, Canada. It is designed for use as a utility, work, urban or leisure vehicle and is manufactured using solely standard North American automotive parts. With a top speed of 40 km/h (25 mph), Might-E Truck is road legal and meets the requirements for a Low Speed Vehicle or Neighborhood Electric Vehicle.

Canadian Electric Vehicles

Canadian Electric Vehicles

Canadian Electric Vehicles Ltd. was first established in 1996 in Errington, British Columbia. During the initial years, its focus was to provide designs, parts and technical support for converting conventional internal combustion vehicles to non-polluting battery powered electric vehicles. Once converted, these vehicles were acquired by a variety of purchasers including federal and provincial governments, industrial companies as well as private individuals. The conversions ranged from three wheeled utility vehicles to house boats as well as various full-sized cars and trucks.

Battery electric vehicle

Battery electric vehicle

A battery electric vehicle (BEV), pure electric vehicle, only-electric vehicle, fully electric vehicle or all-electric vehicle is a type of electric vehicle (EV) that exclusively uses chemical energy stored in rechargeable battery packs, with no secondary source of propulsion. BEVs use electric motors and motor controllers instead of internal combustion engines (ICEs) for propulsion. They derive all power from battery packs and thus have no internal combustion engine, fuel cell, or fuel tank. BEVs include – but are not limited to – motorcycles, bicycles, scooters, skateboards, railcars, watercraft, forklifts, buses, trucks, and cars.

Piaggio Porter

Piaggio Porter

The Piaggio Porter is a cab over microvan and pick-up produced and sold by the Italian company Piaggio since 1992 under the Piaggio Commercial Vehicle brand.

Monocoque

Monocoque

Monocoque, also called structural skin, is a structural system in which loads are supported by an object's external skin, in a manner similar to an egg shell. The word monocoque is a French term for "single shell".

Daihatsu

Daihatsu

Daihatsu Motor Co., Ltd. , commonly known as Daihatsu, is a Japanese automobile manufacturer and one of the oldest surviving Japanese internal combustion engine manufacturers. The company's headquarters are located in Ikeda, Osaka Prefecture.

Kei car

Kei car

Kei car, is the Japanese vehicle category for the smallest highway-legal passenger cars, with restricted dimensions and engine capacity. Similar Japanese categories exist for microvans, and kei trucks. These vehicles are most often the Japanese equivalent of the EU A-segment.

Daihatsu Hijet

Daihatsu Hijet

The Daihatsu Hijet is a cab over microvan and kei truck produced and sold by the Japanese automaker Daihatsu since 1960. Despite the similarities between the Hijet name and Toyota's naming scheme for its trucks and vans, the name "Hijet" has been in use for Daihatsu's kei trucks and microvans since 1960, over two decades before Toyota took control. "Hijet", when transliterated into Japanese, is very similar to "Midget", one of Daihatsu's other mini-trucks. According to Daihatsu, the name "Hijet" was created to imply that the vehicle offers higher performance than the Midget. The Hijet competes in Japan with the Honda Acty, Mitsubishi Minicab, Nissan Clipper, Subaru Sambar and Suzuki Carry.

Honda Acty

Honda Acty

The Honda Acty is a series of cabover microvans and kei trucks produced by the Japanese automaker Honda from 1977 to 2021, designed for the Japanese domestic market (JDM). "Acty" is short for "Activity".

Mitsubishi Minicab

Mitsubishi Minicab

The Mitsubishi Minicab is a kei truck and microvan, built and sold in Japan by Japanese automaker Mitsubishi Motors since 1966. In Japan, it was sold at a specific retail chain called Galant Shop. It was also sold by China Motor Corporation (CMC) in Taiwan as the CMC Veryca, starting in 1985. A battery electric model of the Minicab, called the Minicab MiEV, is sold in the Japanese market since December 2011.

Subaru Sambar

Subaru Sambar

The Subaru Sambar is a cabover truck and microvan manufactured and marketed by Subaru as Japan's first truck compliant with the country's strict Keitora (軽トラ) or Kei vehicle tax class. Introduced in 1961 in microvan and Kei pickup configurations, the Sambar remains in production, now in its eighth generation — beginning with the sixth generation as a rebadged Daihatsu Hijet.

Design

Almost all trucks share a common construction: they are made of a chassis, a cab, an area for placing cargo or equipment, axles, suspension and roadwheels, an engine and a drivetrain. Pneumatic, hydraulic, water, and electrical systems may also be present. Many also tow one or more trailers or semi-trailers.

Cab

A cabover truck
A cabover truck
Streamlined conventional cab
Streamlined conventional cab
Cab beside engine
Cab beside engine

The "cab", or "cabin" is an enclosed space where the driver is seated. A "sleeper" is a compartment attached to or integral with the cab where the driver can rest while not driving, sometimes seen in semi-trailer trucks.

There are several cab configurations:

  • "Cab over engine" (COE) or "flat nose"; where the driver is seated above the front axle and the engine. This design is almost ubiquitous in Europe, where overall truck lengths are strictly regulated, and is widely used in the rest of the world. They were common in North American heavy-duty trucks but lost prominence when permitted length was extended in the early 1980s. Nevertheless, this design is still popular in North America among medium- and light-duty trucks. To reach the engine, the whole cab tilts forward, earning this design the name of "tilt-cab". This type of cab is especially suited to the delivery conditions in Europe where many roads require the short turning radius afforded by the shorter wheelbase of the cab over engine layout.[40]
  • "Conventional" cabs seated the driver behind the engine, as in most passenger cars or pickup trucks. Many new cabs are very streamlined, with a sloped hood (bonnet) and other features to lower drag. Conventional cabs are the most common in North America, Australia, and China, and are known in the UK as "American cabs" and in the Netherlands as "torpedo cabs".
  • "Cab beside engine" designs are used for terminal tractors at shipping yards and for other specialist vehicles carrying long loads such as pipes. This type is often made by replacing the passenger side of a cab-over truck with an extended section of the load bed.

A further step from this is the side loading forklift that can be described as a specially fabricated vehicle with the same properties as a truck of this type, in addition to the ability to pick up its own load.

Engines and motors

Cummins ISB 6.7L medium-duty truck diesel engine
Cummins ISB 6.7L medium-duty truck diesel engine

Most small trucks such as sport utility vehicles (SUVs), vans or pickups, and even light medium-duty trucks in North America, China, and Russia use gasoline engines (petrol engines), but many diesel engined models are now being produced. Most of the heavier trucks use four-stroke diesel engines with a turbocharger and intercooler. Huge off-highway trucks use locomotive-type engines such as a V12 Detroit Diesel two stroke engine. A large proportion of refuse trucks in the United States employ CNG (compressed natural gas) engines for their low fuel cost and reduced carbon emissions.

A significant proportion of North American manufactured trucks use an engine built by the last remaining major independent engine manufacturer (Cummins) but most global OEMs such as Volvo Trucks and Daimler AG promote their own "captive" engines.[41]

In the European Union, all new truck engines must comply with Euro VI emission regulations.[42]

As of 2019 several alternative technologies are competing to displace the use of diesel engines in heavy trucks. CNG engines are widely used in the US refuse industry and in concrete mixers, among other short-range vocations, but range limitations have prevented their broader uptake in freight hauling applications. Heavy electric trucks and hydrogen-powered trucks are new to the market in 2021,[43][44] but major freight haulers are interested.[45][46] Although cars will be first the phase-out of fossil fuel vehicles includes trucks.[47] According to The Economist magazine "Electric lorries will probably run on hydrogen, not batteries, which are too expensive."[48] Other researchers say that once faster chargers are available batteries will become competitive against diesel for all, except perhaps the heaviest, trucks.[49]

Drivetrain

A truck rear suspension and drive axles overview
A truck rear suspension and drive axles overview
Eaton Roadranger 18 speed "crash box" with automated gearshift
Eaton Roadranger 18 speed "crash box" with automated gearshift

Small trucks use the same type of transmissions as almost all cars, having either an automatic transmission or a manual transmission with synchromesh (synchronizers). Bigger trucks often use manual transmissions without synchronizers, saving bulk and weight, although synchromesh transmissions are used in larger trucks as well. Transmissions without synchronizers, known as "crash boxes", require double-clutching for each shift, (which can lead to repetitive motion injuries), or a technique known colloquially as "floating", a method of changing gears which doesn't use the clutch, except for starts and stops, due to the physical effort of double-clutching, especially with non-power-assisted clutches, faster shifts, and less clutch wear.

Double-clutching allows the driver to control the engine and transmission revolutions to synchronize so that a smooth shift can be made; for example, when upshifting, the accelerator pedal is released and the clutch pedal is depressed while the gear lever is moved into neutral, the clutch pedal is then released and quickly pushed down again while the gear lever is moved to the next higher gear. Finally, the clutch pedal is released and the accelerator pedal pushed down to obtain the required engine speed. Although this is a relatively fast movement, perhaps a second or so while the transmission is in neutral, it allows the engine speed to drop and synchronize engine and transmission revolutions relative to the road speed. Downshifting is performed in a similar fashion, except the engine speed is now required to increase (while the transmission is in neutral) just the right amount in order to achieve the synchronization for a smooth, non-collision gear change. "Skip changing" is also widely used; in principle, the operation is the same as double-clutching, but it requires neutral be held slightly longer than a single-gear change.

Common North American setups include 9, 10, 13, 15, and 18 speeds. Automatic and automated manual transmissions for heavy trucks are becoming more and more common, due to advances both in transmission and engine power. In Europe, 8, 10, 12, and 16 gears are common on larger trucks with a manual transmission, while conventional automatic or automated manual transmissions would have anything from 5 to 12 gears. Almost all heavy truck transmissions are of the "range and split" (double H shift pattern) type, where range change and so‑called half gears or splits are air operated and always preselected before the main gear selection.

Frame

A truck rear frame (chassis) section view
A truck rear frame (chassis) section view
Pickup truck frame (right rear view)
Pickup truck frame (right rear view)

A truck frame consists of two parallel boxed (tubular) or C‑shaped rails, or beams, held together by crossmembers. These frames are referred to as ladder frames due to their resemblance to a ladder if tipped on end. The rails consist of a tall vertical section (two if boxed) and two shorter horizontal flanges. The height of the vertical section provides opposition to vertical flex when weight is applied to the top of the frame (beam resistance). Though typically flat the whole length on heavy-duty trucks, the rails may sometimes be tapered or arched for clearance around the engine or over the axles. The holes in rails are used either for mounting vehicle components and running wires and hoses or measuring and adjusting the orientation of the rails at the factory or repair shop.

The frame is usually made of steel, but can be made (whole or in part) of aluminum for a lighter weight. A tow bar may be found attached at one or both ends, but heavy tractors almost always make use of a fifth wheel hitch.

Body types

Box trucks ("tilts" in the UK) have walls and a roof, making an enclosed load space. The rear has doors for unloading; a side door is sometimes fitted.[50]

Chassis cab trucks have a fully-enclosed cab at the front, with bare chassis frame-rails behind, suitable for subsequent permanent attachment of a specialized payload, like a fire-truck or ambulance body.

Concrete mixers have a rotating drum on an inclined axis, rotating in one direction to mix, and in the other to discharge the concrete down chutes. Because of the weight and power requirements of the drum body and rough construction sites, mixers have to be very heavy duty.[51][52]

Dump trucks ("tippers" in the UK) transport loose material such as sand, gravel, or dirt for construction. A typical dump truck has an open-box bed, which is hinged at the rear and lifts at the front, allowing the material in the bed to be unloaded ("dumped") on the ground behind the truck.[53][54]

Flatbed trucks have an entirely flat, level platform body. This allows for quick and easy loading but has no protection for the load. Hanging or removable sides are sometimes fitted.[55]

Refrigerator trucks have insulated panels as walls and a roof and floor, used for transporting fresh and frozen cargo such as ice cream, food, vegetables, and prescription drugs. They are mostly equipped with double-wing rear doors, but a side door is sometimes fitted.

Refuse trucks have a specialized body for collecting and, often, compacting trash collected from municipal, commercial, and industrial sites. This application has the widest use of the cab-over configuration in North America, to provide better maneuverability in tight situations. They are also among the most severe-duty and highest GVWR trucks on public roads.

Semi-tractors ("artics" in the UK) have a fifth wheel for towing a semi-trailer instead of a body.

Tank trucks ("tankers" in the UK) are designed to carry liquids or gases. They usually have a cylindrical tank lying horizontally on the chassis. Many variants exist due to the wide variety of liquids and gases that can be transported.[56]

Wreckers ("recovery lorries" in the UK) are used to recover and/or tow disabled vehicles. They are normally equipped with a boom with a cable; wheel/chassis lifts are becoming common on newer trucks.[57][58][59]

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Chassis

Chassis

A chassis is the load-bearing framework of an artificial object, which structurally supports the object in its construction and function. An example of a chassis is a vehicle frame, the underpart of a motor vehicle, on which the body is mounted; if the running gear such as wheels and transmission, and sometimes even the driver's seat, are included, then the assembly is described as a rolling chassis.

Cargo

Cargo

Cargo consists of goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. Cargo was originally a shipload but now covers all types of freight, including transport by rail, van, truck, or intermodal container. The term cargo is also used in case of goods in the cold-chain, because the perishable inventory is always in transit towards a final end-use, even when it is held in cold storage or other similar climate-controlled facilities. The term freight is commonly used to describe the movements of flows of goods being transported by any mode of transportation.

Axle

Axle

An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle is supported. In the latter case, a bearing or bushing sits inside a central hole in the wheel to allow the wheel or gear to rotate around the axle. Sometimes, especially on bicycles, the latter type of axle is referred to as a spindle.

Wheel

Wheel

A wheel is a circular component that is intended to rotate on an axle bearing. The wheel is one of the key components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating movement or transportation while supporting a load, or performing labor in machines. Wheels are also used for other purposes, such as a ship's wheel, steering wheel, potter's wheel, and flywheel.

Engine

Engine

An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy.

Trailer (vehicle)

Trailer (vehicle)

A trailer is an unpowered vehicle towed by a powered vehicle. It is commonly used for the transport of goods and materials.

Truck sleeper

Truck sleeper

A truck sleeper or sleeper cab is a compartment attached behind the cabin of a tractor unit used for rest or sleeping.

Cab over

Cab over

Cab-over, also known as cab over engine (COE), cab forward (U.S.), flat nose (Canada), or forward control (UK), is a body style of truck, bus, or van that has a vertical front, "flat face" or a semi-hood, with the cab of the truck sitting above the front axle. This contrasts with a conventional truck where the engine is mounted in front of the driver.

Internal combustion engine

Internal combustion engine

An internal combustion engine is a heat engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high-temperature and high-pressure gases produced by combustion applies direct force to some component of the engine. The force is typically applied to pistons, turbine blades, a rotor, or a nozzle. This force moves the component over a distance, transforming chemical energy into kinetic energy which is used to propel, move or power whatever the engine is attached to. This replaced the external combustion engine for applications where the weight or size of an engine were more important.

Terminal tractor

Terminal tractor

A terminal tractor, known in the United States as a shag truck, shunt truck, spotter truck, spotting tractor, yard truck, yard shifter, yard dog, yard goat, yard horse, yard jockey, hostler, or mule, is a kind of semi-tractor intended to move semi-trailers within a cargo yard, warehouse facility, or intermodal facility, much like a switcher locomotive is used to position railcars. In the United Kingdom they are known as terminal lorries.

Shipyard

Shipyard

A shipyard, also called a dockyard or boatyard, is a place where ships are built and repaired. These can be yachts, military vessels, cruise liners or other cargo or passenger ships. Dockyards are sometimes more associated with maintenance and basing activities than shipyards, which are sometimes associated more with initial construction. The terms are routinely used interchangeably, in part because the evolution of dockyards and shipyards has often caused them to change or merge roles.

Forklift

Forklift

A forklift is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various companies, including Clark, which made transmissions, and Yale & Towne Manufacturing, which made hoists. Since World War II, the use and development of the forklift truck have greatly expanded worldwide. Forklifts have become an indispensable piece of equipment in manufacturing and warehousing. In 2013, the top 20 manufacturers worldwide posted sales of $30.4 billion, with 944,405 machines sold.

Sales and sales issues

Manufacturers

Truck market worldwide

Largest truck manufacturers in the world as of 2015.
Pos. Make Units
1 Daimler AG (Mercedes-Benz, Freightliner, Unimog, Western Star, Fuso, BharatBenz) 506,663[60]
2 Navistar International 359,000[61]
3 Dongfeng 336,869[62]
4 Tata 317,780[63]
5 Volvo Group (Volvo, Mack, Renault, UD Nissan) 207,475[64]
6 Volkswagen Group (MAN, Scania, Caminhões e Ônibus) 179,035[65]
7 Hino 162,870[66]
8 Paccar (DAF, Kenworth, Peterbilt, Leyland) 154,700[67]
9 Iveco 140,200[68]

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List of truck manufacturers

List of truck manufacturers

This is a list of truck manufacturers by region.

Mercedes-Benz

Mercedes-Benz

Mercedes-Benz, commonly referred to as Mercedes and sometimes as Benz, is a German luxury and commercial vehicle automotive brand established in 1926. Mercedes-Benz AG is headquartered in Stuttgart, Baden-Württemberg, Germany. Mercedes-Benz AG produces consumer luxury vehicles and commercial vehicles badged as Mercedes-Benz. From November 2019 onwards, Mercedes-Benz-badged heavy commercial vehicles are managed by Daimler Truck, a former part of the Mercedes-Benz Group turned into an independent company in late 2021. In 2018, Mercedes-Benz was the largest brand of premium vehicles in the world, having sold 2.31 million passenger cars.

Freightliner Trucks

Freightliner Trucks

Freightliner Trucks is a US semi truck manufacturer. Founded in 1929 as the truck-manufacturing division of Consolidated Freightways, the company was established in 1942 as Freightliner Corporation. Owned by Daimler AG from 1981 to 2021, Freightliner is now a part of Daimler Truck subsidiary Daimler Truck North America.

Unimog

Unimog

The Unimog is a range of multi-purpose tractors, trucks and lorries that has been produced by Boehringer from 1948 until 1951, and by Daimler Truck since 1951. In the United States and Canada, the Unimog was sold as the Freightliner Unimog.

BharatBenz

BharatBenz

BharatBenz is a brand of Daimler India Commercial Vehicles (DICV), itself a wholly owned subsidiary of the German manufacturer Daimler Truck AG. The brand is known for its trucks and buses. The headquarters of BharatBenz is at Oragadam, Chennai, India.

Tata Motors

Tata Motors

Tata Motors Limited is an Indian multinational automotive manufacturing company, headquartered in Mumbai, India, which is part of the Tata Group. The company produces passenger cars, trucks, vans, coaches, buses.

Mack Trucks

Mack Trucks

Mack Trucks, Inc., is an American truck manufacturing company and a former manufacturer of buses and trolley buses. Founded in 1900 as the Mack Brothers Company, it manufactured its first truck in 1905 and adopted its present name in 1922. Mack Trucks is a subsidiary of AB Volvo, which purchased Mack along with its then parent company Renault Véhicules Industriels in 2000.

Renault Trucks

Renault Trucks

Renault Trucks is a French commercial truck manufacturer with corporate headquarters at Saint-Priest near Lyon. Originally part of Renault, it has been a subsidiary of the Volvo Group since 2001.

UD Trucks

UD Trucks

UD Trucks Corporation is a Japanese company whose principal business is the manufacturing and sales of diesel trucks, buses, bus chassis and special-purpose vehicles. Its headquarters are located in Ageo, Saitama, Japan. The company is a wholly owned subsidiary of Isuzu since 2021. Until 2010, the company was known as Nissan Diesel.

MAN Truck & Bus

MAN Truck & Bus

MAN Truck & Bus SE is a subsidiary of Traton, and one of the leading international providers of commercial vehicles. Headquartered in Munich, Germany, MAN Truck & Bus produces vans in the range from 3.0 to 5.5 t gvw, trucks in the range from 7.49 to 44 t gvw, heavy goods vehicles up to 250 t road train gvw, bus-chassis, coaches, interurban coaches, and city buses. MAN Truck & Bus also produces diesel and natural-gas engines. The MAN acronym originally stood for Maschinenfabrik Augsburg-Nürnberg AG, formerly MAN AG.

Scania AB

Scania AB

Scania AB is a major Swedish manufacturer headquartered in Södertälje, focusing on commercial vehicles—specifically heavy lorries, trucks and buses. It also manufactures diesel engines for heavy vehicles as well as marine and general industrial applications.

Volkswagen Caminhões e Ônibus

Volkswagen Caminhões e Ônibus

Volkswagen Truck & Bus Indústria e Comércio de Veículos Ltda., is a Brazilian commercial vehicle manufacturing company based in Resende, Brazil and a subsidiary of Traton. It manufactures heavy trucks and buses under the Volkswagen marque.

Driving

In many countries, driving a truck requires a special driving license. The requirements and limitations vary with each different jurisdiction.

Australia

Inside a Mack truck
Inside a Mack truck

In Australia, a truck driver's license is required for any motor vehicle with a Gross Vehicle Mass (GVM) exceeding 4.5 t (4.4 long tons; 5.0 short tons). The motor vehicles classes are further expanded as:

Combination
  • HC: Heavy Combination, a typical prime mover plus semi-trailer combination.
  • MC: Multi Combination, e.g., B Doubles/road trains
Rigid
  • LR: Light rigid: a rigid vehicle with a GVM of more than 4.5 t (4.4 long tons; 5.0 short tons) but not more than 8 t (7.9 long tons; 8.8 short tons). Any towed trailer must not weigh more than 9 t (8.9 long tons; 9.9 short tons) GVM.
  • MR: Medium rigid: a rigid vehicle with 2 axles and a GVM of more than 8 t (7.9 long tons; 8.8 short tons). Any towed trailer must not weigh more than 9 t (8.9 long tons; 9.9 short tons) GVM. Also includes vehicles in class LR.
  • HR: Heavy Rigid: a rigid vehicle with three or more axles and a GVM of more than 8 t (7.9 long tons; 8.8 short tons). Any towed trailer must not weigh more than 9 t (8.9 long tons; 9.9 short tons) GVM. Also includes articulated buses and vehicles in class MR.
Heavy vehicle transmission

There is also a heavy vehicle transmission condition for a license class HC, HR, or MC test passed in a vehicle fitted with an automatic or synchromesh transmission; a driver's license will be restricted to vehicles of that class fitted with a synchromesh or automatic transmission. To have the condition removed, a person needs to pass a practical driving test in a vehicle with non-synchromesh transmission (constant mesh or crash box).[69]

Europe

Inside a Mercedes-Benz truck
Inside a Mercedes-Benz truck

Driving licensing has been harmonized throughout the European Union and the EEA (and practically all European non-member states), so that common rules apply within Europe (see European driving licence). As an overview, to drive a vehicle weighing more than 7.5 t (7.4 long tons; 8.3 short tons) for commercial purposes requires a specialist license (the type varies depending on the use of the vehicle and number of seats). For licenses first acquired after 1997, that weight was reduced to 3.5 t (3.4 long tons; 3.9 short tons), not including trailers.

Since 2013, the C1 license category allows driving vehicles over 3.5 and up to 7.5 tonnes. The C license category allows driving vehicles over 3.5 tonnes with a trailer up to 750 kg, and the CE category allows driving category C vehicles with a trailer over 750 kg.

South Africa

To drive any vehicle with a GVM exceeding 3.5 t (3.4 long tons; 3.9 short tons), a code C1 drivers license is required. Furthermore, if the vehicle exceeds 16 t (15.7 long tons; 17.6 short tons) a code C license becomes necessary.

To drive any vehicle in South Africa towing a trailer with a GVM more than 7.5 t (7.4 long tons; 8.3 short tons), further restrictions apply and the driver must possess a license suitable for the GVM of the total combination as well as an articulated endorsement. This is indicated with the letter "E" prefixing the license code.

In addition, any vehicle designed to carry goods or passengers may only be driven by a driver possessing a Public Driver's Permit, (or PrDP) of the applicable type. This is an additional license that is added to the DL card of the operator and subject to annual renewal unlike the five-year renewal period of a normal license.

The requirements for obtaining the different classes are below.

  • "G": Required for the transport of general goods, requires a criminal record check and a fee on issuing and renewal.
  • "P": Required for the transport of paying passengers, requires a more stringent criminal record check, additionally the driver must be over the age of 21 at time of issue. A G class PrDP will be issued at the same time.
  • "D": Required for the transport of dangerous materials, requires all of the same checks as class P., and in addition the driver must be over 25 at time of issue.

United States

Inside a Navistar 9000
Inside a Navistar 9000

In the United States, a commercial driver's license is required to drive any type of commercial vehicle weighing 26,001 lb (11,794 kg) or more.[70] The federal government regulates how many hours a driver may be on the clock, how much rest and sleep time is required (e.g., 11 hours driving/14 hours on-duty followed by 10 hours off, with a maximum of 70 hours/8 days or 60 hours/7 days, 34 hours restart )[71] Violations are often subject to significant penalties. Instruments to track each driver's hours must sometimes be fitted. In 2006, the US trucking industry employed 1.8 million drivers of heavy trucks.[72]

There is a shortage of willing trained long-distance truck drivers.[73] Part of the reason for this is the economic fallout from deregulation of the trucking industry. Michael H. Belzer, associate professor, in the economics department at Wayne State University and co-author of Sweatshops on Wheels: Winners and Losers in Trucking Deregulation, argues that low pay, bad working conditions and unsafe conditions have been a direct result of deregulation.[74][75] The book cites poor working conditions and an unfair pay system as responsible for high annual employee turnover in the industry.[76][77]

In 2018, in the US, 5,096 large trucks and buses were involved in fatal crashes:

  • The number of large trucks involved in fatal crashes is 4,862,
  • The number of large trucks involved in injury crashes is 112,000,
  • The number of large trucks involved in property damage only crashes is 414,000.[78]

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Truck driver

Truck driver

A truck driver is a person who earns a living as the driver of a truck, which is commonly defined as a large goods vehicle (LGV) or heavy goods vehicle (HGV).

European Union

European Union

The European Union (EU) is a supranational political and economic union of 27 member states that are located primarily in Europe. The union has a total area of 4,233,255.3 km2 (1,634,469.0 sq mi) and an estimated total population of nearly 447 million. The EU has often been described as a sui generis political entity combining the characteristics of both a federation and a confederation.

European Economic Area

European Economic Area

The European Economic Area (EEA) was established via the Agreement on the European Economic Area, an international agreement which enables the extension of the European Union's single market to member states of the European Free Trade Association. The EEA links the EU member states and three EFTA states into an internal market governed by the same basic rules. These rules aim to enable free movement of persons, goods, services, and capital within the European single market, including the freedom to choose residence in any country within this area. The EEA was established on 1 January 1994 upon entry into force of the EEA Agreement. The contracting parties are the EU, its member states, and Iceland, Liechtenstein, and Norway.

European driving licence

European driving licence

The European driving licence is a driving licence issued by the member states of the European Economic Area (EEA); all 27 EU member states and three EFTA member states; Iceland, Liechtenstein and Norway, which give shared features the various driving licence styles formerly in use. It is credit card-style with a photograph and a microchip. They were introduced to replace the 110 different plastic and paper driving licences of the 300 million drivers in the EEA. The main objective of the licence is to reduce the risk of fraud.

Commercial driver's license

Commercial driver's license

A commercial driver's license (CDL) is a driver's license required in the United States to operate large and heavy vehicles or a vehicle of any size that transports hazardous materials or more than 15 passengers.

Trucking industry in the United States

Trucking industry in the United States

The trucking industry serves the American economy by transporting large quantities of raw materials, works in process, and finished goods over land—typically from manufacturing plants to retail distribution centers. Trucks are also used in the construction industry, two of which require dump trucks and portable concrete mixers to move the large amounts of rocks, dirt, concrete, and other building materials used in construction. Trucks in America are responsible for the majority of freight movement over land and are tools in the manufacturing, transportation, and warehousing industries.

Deregulation

Deregulation

Deregulation is the process of removing or reducing state regulations, typically in the economic sphere. It is the repeal of governmental regulation of the economy. It became common in advanced industrial economies in the 1970s and 1980s, as a result of new trends in economic thinking about the inefficiencies of government regulation, and the risk that regulatory agencies would be controlled by the regulated industry to its benefit, and thereby hurt consumers and the wider economy. Economic regulations were promoted during the Gilded Age, in which progressive reforms were claimed as necessary to limit externalities like corporate abuse, unsafe child labor, monopolization, pollution, and to mitigate boom and bust cycles. Around the late 1970s, such reforms were deemed burdensome on economic growth and many politicians espousing neoliberalism started promoting deregulation.

Michael H. Belzer

Michael H. Belzer

Michael H. Belzer is an internationally recognized expert on the trucking industry, especially the institutional and economic impact of deregulation. He is a professor in the economics department at Wayne State University. He is the author of Sweatshops on Wheels: Winners and Losers in Trucking Deregulation. Along with Gregory M. Saltzman, he coauthored Truck Driver Occupational Safety and Health: 2003 Conference Report and Selective Literature Review, National Institute for Occupational Safety and Health, 2007. He has written many peer-reviewed articles on trucking industry economics, labor, occupational safety and health, infrastructure, and operational issues.

Associate professor

Associate professor

Associate professor is an academic title with two principal meanings: in the North American system and that of the Commonwealth system.

Wayne State University

Wayne State University

Wayne State University (WSU) is a public research university in Detroit, Michigan. It is Michigan's third-largest university. Founded in 1868, Wayne State consists of 13 schools and colleges offering approximately 350 programs to nearly 24,000 graduate and undergraduate students. Wayne State University, along with the University of Michigan and Michigan State University, compose the University Research Corridor of Michigan. Wayne State is classified among "R1: Doctoral Universities – Very high research activity".

Environmental effects

Exhaust fumes from a small truck
Exhaust fumes from a small truck

Like cars, trucks contribute to air, noise, and water pollution.[79] Unlike cars, as of 2022, most trucks run on diesel, and diesel exhaust is especially dangerous for health.[80] Some countries have different vehicle emission standards for trucks and cars.[81][82]

NOx and particulates emitted by trucks are very dangerous to health,[83][84] causing thousands of early deaths annually in the US alone.[85] As older trucks are usually the worst,[86] many cities have banned 20th century trucks.[87] Air pollution also threatens professional truck drivers.[88]

Over a quarter of global transport CO2 emissions are from road freight,[89] in 2021 over 1700 million tonnes from medium and heavy trucks,[90] so many countries are further restricting truck CO2 emissions to help limit climate change.[91] Many environmental organizations favor laws and incentives to encourage the switch from road to rail, especially in Europe.[92] Several countries have pledged that 30% of sales of trucks and buses will be zero emission by 2030.[93]

With respect to noise pollution, trucks emit considerably higher sound levels at all speeds compared to typical cars; this contrast is particularly strong with heavy-duty trucks.[94] There are several aspects of truck operations that contribute to the overall sound that is emitted. Continuous sounds are those from tires rolling on the roadway and the constant hum of their diesel engines at highway speeds. Less frequent noises, but perhaps more noticeable, are things like the repeated sharp-pitched whistle of a turbocharger on acceleration, or the abrupt blare of an exhaust brake retarder when traversing a downgrade. There has been noise regulation put in place to help control where and when the use of engine braking retarders are allowed.

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Diesel exhaust

Diesel exhaust

Diesel exhaust is the gaseous exhaust produced by a diesel type of internal combustion engine, plus any contained particulates. Its composition may vary with the fuel type or rate of consumption, or speed of engine operation, and whether the engine is in an on-road vehicle, farm vehicle, locomotive, marine vessel, or stationary generator or other application.

Environmental effects of transport

Environmental effects of transport

The environmental effects of transport are significant because transport is a major user of energy, and burns most of the world's petroleum. This creates air pollution, including nitrous oxides and particulates, and is a significant contributor to global warming through emission of carbon dioxide. Within the transport sector, road transport is the largest contributor to global warming.

NOx

NOx

In atmospheric chemistry, NOx is shorthand for nitric oxide and nitrogen dioxide, the nitrogen oxides that are most relevant for air pollution. These gases contribute to the formation of smog and acid rain, as well as affecting tropospheric ozone.

Particulate pollution

Particulate pollution

Particulate pollution is pollution of an environment that consists of particles suspended in some medium. There are three primary forms: atmospheric particulate matter, marine debris, and space debris. Some particles are released directly from a specific source, while others form in chemical reactions in the atmosphere. Particulate pollution can be derived from either natural sources or anthropogenic processes.

Greenhouse gas emissions

Greenhouse gas emissions

Greenhouse gas emissions from human activities strengthen the greenhouse effect, contributing to climate change. Most is carbon dioxide from burning fossil fuels: coal, oil, and natural gas. The largest emitters include coal in China and large oil and gas companies. Human-caused emissions have increased atmospheric carbon dioxide by about 50% over pre-industrial levels. The growing levels of emissions have varied, but have been consistent among all greenhouse gases (GHGs). Emissions in the 2010s averaged 56 billion tons a year, higher than any decade before.

Climate change mitigation

Climate change mitigation

Climate change mitigation is action to limit climate change by reducing emissions of greenhouse gases or removing those gases from the atmosphere. The recent rise in global average temperature is mostly caused by emissions from fossil fuels burning. Mitigation can reduce emissions by transitioning to sustainable energy sources, conserving energy, and increasing efficiency. In addition, CO2 can be removed from the atmosphere by enlarging forests, restoring wetlands and using other natural and technical processes, which are grouped together under the term of carbon sequestration.

Noise pollution

Noise pollution

Noise pollution, or sound pollution, is the propagation of noise or sound with ranging impacts on the activity of human or animal life, most of which are harmful to a degree. The source of outdoor noise worldwide is mainly caused by machines, transport, and propagation systems. Poor urban planning may give rise to noise disintegration or pollution, side-by-side industrial and residential buildings can result in noise pollution in the residential areas. Some of the main sources of noise in residential areas include loud music, transportation, lawn care maintenance, construction, electrical generators, wind turbines, explosions, and people.

Tire

Tire

A tire or tyre is a ring-shaped component that surrounds a wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide traction on the surface over which the wheel travels. Most tires, such as those for automobiles and bicycles, are pneumatically inflated structures, which also provide a flexible cushion that absorbs shock as the tire rolls over rough features on the surface. Tires provide a footprint, called a contact patch, that is designed to match the weight of the vehicle with the bearing strength of the surface that it rolls over by providing a bearing pressure that will not deform the surface excessively.

Exhaust brake

Exhaust brake

An exhaust brake is a means of slowing a diesel engine by closing off the exhaust path from the engine, causing the exhaust gases to be compressed in the exhaust manifold, and in the cylinder. Since the exhaust is being compressed, and there is no fuel being applied, the engine slows down the vehicle. The amount of negative torque generated is usually directly proportional to the back pressure of the engine.

Retarder (mechanical engineering)

Retarder (mechanical engineering)

A retarder is a device used to augment or replace some of the functions of primary friction-based braking systems, usually on heavy vehicles. Retarders serve to slow vehicles, or maintain a steady speed while traveling down a hill, and help prevent the vehicle from "running away" by accelerating down the hill. They are not usually capable of bringing vehicles to a standstill, as their effectiveness diminishes as vehicle speed lowers. They are usually used as an additional "assistance" to slow vehicles, with the final braking done by a conventional friction braking system. As the friction brake will be used less, particularly at higher speeds, their service life is increased, and since in those vehicles the brakes are air-actuated, it helps to conserve air pressure too.

Noise regulation

Noise regulation

Noise regulation includes statutes or guidelines relating to sound transmission established by national, state or provincial and municipal levels of government. After the watershed passage of the United States Noise Control Act of 1972, other local and state governments passed further regulations.

Engine braking

Engine braking

Engine braking occurs when the retarding forces within an engine are used to slow down a motor vehicle, as opposed to using additional external braking mechanisms such as friction brakes or magnetic brakes.

Operator health and safety

Truck cab filter housing using a contiguous series of pre-, HEPA, and charcoal panel filters
Truck cab filter housing using a contiguous series of pre-, HEPA, and charcoal panel filters

A truck cab is a hazard control that protects the truck operator from hazardous airborne pollutants. As an enclosure, it is an example of an engineering control. Enclosed operator cabs have been used on agriculture, mining, and construction vehicles for several decades. Most modern-day enclosed cabs have heating, ventilation, and air conditioning (HVAC) systems for primarily maintaining a comfortable temperature and providing breathable air for their occupants. Various levels of filtration can be incorporated into the HVAC system to remove airborne pollutants such as dusts, diesel particulate matter (DPM), and other aerosols.[95]

Two key elements of an effective environmental enclosure are a good filtration system and an enclosure with good integrity (sealed isolation from the outside environment). It is recommended that a filtration system filter out at least 95% or greater of airborne respirable aerosols from the intake airflow, with an additional recirculation filtering component for the inside air. Good enclosure integrity is also needed to achieve positive pressure to prevent wind-driven aerosol penetration into the enclosure, as well as to minimize air leakage around the filtration system. Test methods and mathematical modeling of environmental enclosures are also beneficial for quantifying and optimizing filtration system designs, as well as maintaining optimum protection factor performance for enclosure occupants.[95]

Discover more about Operator health and safety related topics

Hierarchy of hazard controls

Hierarchy of hazard controls

Hierarchy of hazard control is a system used in industry to minimize or eliminate exposure to hazards. It is a widely accepted system promoted by numerous safety organizations. This concept is taught to managers in industry, to be promoted as standard practice in the workplace. It has also been used to inform public policy, in fields such as road safety. Various illustrations are used to depict this system, most commonly a triangle.

Engineering controls

Engineering controls

Engineering controls are strategies designed to protect workers from hazardous conditions by placing a barrier between the worker and the hazard or by removing a hazardous substance through air ventilation. Engineering controls involve a physical change to the workplace itself, rather than relying on workers' behavior or requiring workers to wear protective clothing.

Dust

Dust

Dust is made of fine particles of solid matter. On Earth, it generally consists of particles in the atmosphere that come from various sources such as soil lifted by wind, volcanic eruptions, and pollution. Dust in homes is composed of about 20–50% dead skin cells. The rest, and in offices, and other human environments is composed of small amounts of plant pollen, human hairs, animal fur, textile fibers, paper fibers, minerals from outdoor soil, burnt meteorite particles, and many other materials which may be found in the local environment.

Aerosol

Aerosol

An aerosol is a suspension of fine solid particles or liquid droplets in air or another gas. Aerosols can be natural or anthropogenic. Examples of natural aerosols are fog or mist, dust, forest exudates, and geyser steam. Examples of anthropogenic aerosols include particulate air pollutants, mist from the discharge at hydroelectric dams, irrigation mist, perfume from atomizers, smoke, dust, steam from a kettle, sprayed pesticides, and medical treatments for respiratory illnesses. When a person inhales the contents of a vape pen or e-cigarette, they are inhaling an anthropogenic aerosol.

Positive pressure

Positive pressure

Positive pressure is a pressure within a system that is greater than the environment that surrounds that system. Consequently, if there is any leak from the positively pressured system it will egress into the surrounding environment. This is in contrast to a negative pressure room, where air is sucked in.

Operations issues

Taxes

Commercial trucks in the US pay higher road use taxes on a state level than other road vehicles and are subject to extensive regulation.[96] A few reasons commercial trucks pay higher road use taxes: they are bigger and heavier than most other vehicles, and cause more wear and tear per hour on roadways; and trucks and their drivers are on the road for more hours per day. Rules on use taxes differ among jurisdictions.

Damage to pavement

The life of a pavement is measured by the number of passes of a vehicle axle. It may be evaluated using the Load Equivalency Factor,[97] which states that the damage by the pass of a vehicle axle is proportional to the 4th power of the weight, so a ten-ton axle consumes 10,000 times the life of the pavement as a one-ton axle. For that reason, loaded trucks cost the same as thousands of cars in pavement costs, and are subject to higher taxes and highway tolls.[36][37]

Commercial insurance

Primary liability insurance coverage protects the truck from damage or injuries to other people as a result of a truck accident. This truck insurance coverage is mandated by U.S. state and federal agencies, and proof of coverage is required to be sent to them. Interstate trucks in the U.S. are required to have a minimum of $75,000 in liability insurance. This includes motor carriers operating vehicles with a gross weight rating in excess of 10,000 lb (4.5 t) (which transport non-hazardous materials). All motor carriers operating vehicles transporting materials classified as hazardous, and which have a gross weight rating in excess of 10,000 lb (4.5 t) must have a minimum of $1,000,000 in liability insurance. All motor carriers operating vehicles such as hopper-type cargo vehicles or tankers with a capacity in excess of 3,500 US gal (13,000 L) must have a minimum of $5,000,000 in liability insurance. Pricing is dependent on region, driving records, and history of the trucking operation.

Motor truck cargo insurance protects the transporter for his responsibility in the event of damaged or lost freight. The policy is purchased with a maximum load limit per vehicle. Cargo insurance coverage limits can range from $10,000 to $100,000 or more. Pricing for this insurance is mainly dependent on the type of cargo being hauled.

Safety

Trucking accidents

Trucking accident
Trucking accident

In 2002 and 2004, there were over 5,000 fatalities related to trucking accidents in the United States. The trucking industry has since made significant efforts in increasing safety regulations. In 2008, the industry had successfully lowered the fatality rate to just over 4,000 deaths, but trucking accidents are still an issue that causes thousands of deaths and injuries each year. Approximately 6,000 trucking accident fatalities occur annually in the United States. Fatalities are not the only issue caused by trucking accidents. Here are some of the environmental issues that arise with trucking accidents:

  • 14.4% of trucking accidents cause cargo to spill
  • 6.5% cause open flames

Following increased pressure from The Times "Cities Fit For Cycling" campaign and from other media in Spring 2012, warning signs are now displayed on the backs of many heavy goods vehicles (HGV). These signs are directed against a common type of accident that occurs when the large vehicle turns left at a junction: a cyclist trying to pass on the nearside can be crushed against the HGV's wheels, especially if the driver cannot see the cyclist. The signs, such as the winning design of the InTANDEM road safety competition launched in March 2012, advocate extra care when passing a large vehicle on the nearside.

HGV safety in the EU

In-vehicle speed limitation is required applying a 90 km/h limit to commercial vehicles over 3.5 tonnes.[98]

Front, side, and rear underrun protection is required on commercial vehicles over 3.5 tonnes.[98]

Trucks must be fitted with blind-spot mirrors that give drivers a wider field of vision than conventional mirrors.[99]

Source: "Truck", Wikipedia, Wikimedia Foundation, (2023, March 5th), https://en.wikipedia.org/wiki/Truck.

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See also
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