A truck, also known as a lorry, is a motor vehicle primarily designed for transporting freight, carrying specialized payloads, or performing utilitarian tasks. Trucks come in diverse sizes, power levels, and configurations, typically featuring a body-on-frame construction with a distinct cabin and payload area. Smaller trucks share mechanical similarities with cars. Commercial trucks can be large and powerful, equipped with specialized equipment like concrete mixers or fire-fighting apparatuses. In American English, a commercial vehicle without a trailer is a 'straight truck,' while a vehicle designed to pull a trailer is a 'tractor'.
In 1901 the term 'motor truck' was in use.
In 1903, George Eldridge of Des Moines, Iowa, built an early American truck powered by an engine with two opposed cylinders and a chain drive. A 1903 Eldridge truck is displayed at the Iowa 80 Trucking Museum in Walcott, Iowa.
Since 1911, the expanded meaning of lorry, "self-propelled vehicle for carrying goods", has been in usage.
In 1923, Benz introduced the diesel engine in production trucks, despite the diesel engine having been invented in 1897.
Since 1930, the expanded application of "truck" to mean "motor-powered load carrier" has been in usage, shortened from "motor truck", which dates back to 1901.
In 1935, a change in road tax rules in the United Kingdom made steam-powered wagons uneconomical compared to the new diesel lorries, leading to the end of their use.
In 1939, Autocar launched the "DC" model (diesel conventional) due to the high demand for diesel engines in heavy applications in the United States.
For licenses first acquired after 1997, the weight limit for driving vehicles for commercial purposes without a specialist license was reduced to 3.5 t (3.4 long tons; 3.9 short tons), not including trailers.
In 2002, there were over 5,000 fatalities related to trucking accidents in the United States.
In 2004, there were over 5,000 fatalities related to trucking accidents in the United States.
In 2006, the US trucking industry employed 1.8 million drivers of heavy trucks.
In 2008, the trucking 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.
Following pressure from The Times "Cities Fit For Cycling" campaign, in March 2012, the InTANDEM road safety competition was launched to advocate extra care when passing a large vehicle on the nearside, leading to warning signs being displayed on heavy goods vehicles (HGV) to prevent accidents with cyclists.
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.
In 2018, in the US, 5,096 large trucks and buses were involved in fatal crashes.
As of 2019, several alternative technologies are competing to displace the use of diesel engines in heavy trucks, with CNG engines widely used in specific industries but limited in broader freight hauling applications due to range limitations.
In 2021, heavy electric trucks and hydrogen-powered trucks are new to the market, attracting interest from major freight haulers as part of the broader phase-out of fossil fuel vehicles.
In 2021, over 1700 million tonnes of global transport CO2 emissions were from medium and heavy trucks. Many countries are further restricting truck CO2 emissions to help limit climate change.
As of 2022, trucks contribute to air, noise, and water pollution. Most trucks run on diesel, and diesel exhaust is especially dangerous for health. Some countries outside the EU have different vehicle emission standards for trucks and cars.
Several countries have pledged that 30% of sales of trucks and buses will be zero emission by 2030.
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