The Motor Carrier Act, passed by Congress in 1935, replace the code of competition. The authorization the Interstate Commerce Commission (ICC) place was to regulate the trucking industry. Since then the ICC has been long abolished, however, it did quite a lot during its time. Based on the recommendations given by the ICC, Congress enacted the first hours of services regulation in 1938. This limited driving hours of truck and bus drivers. In 1941, the ICC reported that inconsistent weight limitation imposed by the states cause problems to effective interstate truck commerce.
The intention of a trailer coupler is to secure the trailer to the towing vehicle. It is an important piece, as the trailer couple attaches to the trailer ball. This then forms a ball and socket connection. It allows for relative movement between the towing vehicle and trailer while towing over uneven road surfaces. The trailer ball should be mounted to the rear bumper or to a drawbar, which may be removable. The drawbar secures to the trailer hitch by inserting it into the hitch receiver and pinning it.
The three most common types of couplers used are straight couplers, A-frame couplers, and adjustable couplers. Another option is bumper-pull hitches in which case draw bars can exert a large amount of leverage on the tow vehicle. This makes it harder to recover from a swerving situation (thus it may not be the safest choice depending on your trip).
A trailer is not very difficult to categorize. In general, it is an unpowered vehicle towed by a powered vehicle. Trailers are most commonly used for the transport of goods and materials. Although some do enjoy recreational usage of trailers as well.
The public idea of the trucking industry in the United States popular culture has gone through many transformations. However, images of the masculine side of trucking are a common theme throughout time. The 1940's first made truckers popular, with their songs and movies about truck drivers. Then in the 1950's they were depicted as heroes of the road, living a life of freedom on the open road. Trucking culture peaked in the 1970's as they were glorified as modern days cowboys, outlaws, and rebels. Since then the portrayal has come with a more negative connotation as we see in the 1990's. Unfortunately, the depiction of truck drivers went from such a positive depiction to that of troubled serial killers.
With the partial deregulation of the trucking industry in 1980 by the Motor Carrier Act, trucking companies increased. The workforce was drastically de-unionized. As a result, drivers received a lower pay overall. Losing its spotlight in the popular culture, trucking had become less intimate as some unspoken competition broke out. However, the deregulation only increased the competition and productivity with the trucking industry as a whole. This was beneficial to the America consumer by reducing costs. In 1982 the Surface Transportation Assistance Act established a federal minimum truck weight limits. Thus, trucks were finally standardized truck size and weight limits across the country. This was also put in to place so that across country traffic on the Interstate Highways resolved the issue of the 'barrier states'.
In the 20th century, the 1940 film "They Drive by Night" co-starred Humphrey Bogart. He plays an independent driver struggling to become financially stable and economically independent. This is all set during the times of the Great Depression. Yet another film was released in 1941, called "The Gang's All Here". It is a story of a trucking company that's been targeted by saboteurs.
According to the U.S. Census Bureau, 40 million United States citizens have moved annually over the last decade. Of those people who have moved in the United States, 84.5% of them have moved within their own state, 12.5% have moved to another state, and 2.3% have moved to another country.
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. In 2006 the US trucking industry employed 1.8 million drivers of heavy trucks.
Trailer stability can be defined as the tendency of a trailer to dissipate side-to-side motion. The initial motion may be caused by aerodynamic forces, such as from a cross wind or a passing vehicle. One common criterion for stability is the center of mass location with respect to the wheels, which can usually be detected by tongue weight. If the center of mass of the trailer is behind its wheels, therefore having a negative tongue weight, the trailer will likely be unstable. Another parameter which is less commonly a factor is the trailer moment of inertia. Even if the center of mass is forward of the wheels, a trailer with a long load, and thus large moment of inertia, may be unstable.
Signage of business routes varies, depending on the type of route they are derived from. Business routes paralleling U.S. and state highways usually have exactly the same shield shapes and nearly the same overall appearance as the routes they parallel, with a rectangular plate reading "BUSINESS" placed above the shield (either supplementing or replacing the directional plate, depending on the preference of the road agency). In order to better identify and differentiate alternate routes from the routes they parallel, some states such as Maryland are beginning to use green shields for business routes off U.S. highways. In addition, Maryland uses a green shield for business routes off state highways with the word "BUSINESS" in place of "MARYLAND" is used for a state route.
The American Association of State Highway and Transportation Officials (AASHTO) is an influential association as an advocate for transportation. Setting important standards, they are responsible for publishing specifications, test protocols, and guidelines. All which are used in highway design and construction throughout the United States. Despite its name, the association represents more than solely highways. Alongside highways, they focus on air, rail, water, and public transportation as well.
As of January 1, 2000, the Federal Motor Carrier Safety Administration (FMCSA) was established as its own separate administration within the U.S. Department of Transportation. This came about under the "Motor Carrier Safety Improvement Act of 1999". The FMCSA is based in Washington, D.C., employing more than 1,000 people throughout all 50 States, including in the District of Columbia. Their staff dedicates themselves to the improvement of safety among commercial motor vehicles (CMV) and to saving lives.
Truckload shipping is the movement of large amounts of cargo. In general, they move amounts necessary to fill an entire semi-trailer or inter-modal container. A truckload carrier is a trucking company that generally contracts an entire trailer-load to a single customer. This is quite the opposite of a Less than Truckload (LTL) freight services. Less than Truckload shipping services generally mix freight from several customers in each trailer. An advantage Full Truckload shipping carriers have over Less than Truckload carrier services is that the freight isn't handled during the trip. Yet, in an LTL shipment, goods will generally be transported on several different trailers.
As the American Interstate Highway System began to expand in the 1950's, the trucking industry began to take over a large market share. That is, a large share of the transportation of goods throughout the country. Before this era, trains had been relied on to transport the bulk of the goods cross country or state to state. The Interstate Highway System was influential as it allows for merchandise to travel door to door with ease. Since then, truckload carriers have taken advantage of the interstate system, especially when performing a long distance move. Typically, they bring the merchandise from one distribution center of the country to another part of the country. The increase in truckload freight transportation has reduced the time it takes to transport the goods. Whether the freight was manufactured or produced for the different areas internationally, the time it takes to transport goods has decreased dramatically.
Implemented in 2014, the National Registry, requires all Medical Examiners (ME) who conduct physical examinations and issue medical certifications for interstate CMV drivers to complete training on FMCSA’s physical qualification standards, must pass a certification test. This is to demonstrate competence through periodic training and testing. CMV drivers whose medical certifications expire must use MEs on the National Registry for their examinations.
FMCSA has reached its goal of at least 40,000 certified MEs signing onto the registry. All this means is that drivers or movers can now find certified medical examiners throughout the country who can perform their medical exam. FMCSA is preparing to issue a follow-on “National Registry 2” rule stating new requirements. In this case, MEs are to submit medical certificate information on a daily basis. These daily updates are sent to the FMCSA, which will then be sent to the states electronically. This process will dramatically decrease the chance of drivers falsifying medical cards.
The rise of technological development gave rise to the modern trucking industry. There a few factors supporting this spike in the industry such as the advent of the gas-powered internal combustion engine. Improvement in transmissions is yet another source, just like the move away from chain drives to gear drives. And of course the development of the tractor/semi-trailer combination.
The first state weight limits for trucks were determined and put in place in 1913. Only four states limited truck weights, from a low of 18,000 pounds (8,200 kg) in Maine to a high of 28,000 pounds (13,000 kg) in Massachusetts. The intention of these laws was to protect the earth and gravel-surfaced roads. In this case, particular damages due to the iron and solid rubber wheels of early trucks. By 1914 there were almost 100,000 trucks on America's roads. As a result of solid tires, poor rural roads, and a maximum speed of 15 miles per hour (24km/h) continued to limit the use of these trucks to mostly urban areas.
By the time 2006 came, there were over 26 million trucks on the United States roads, each hauling over 10 billion short tons of freight (9.1 billion long tons). This was representing almost 70% of the total volume of freight. When, as a driver or an automobile drivers, most automobile drivers are largely unfamiliar with large trucks. As as a result of these unaware truck drivers and their massive 18-wheeler's numerous blind spots. The Occupational Safety and Health Administration has determined that 70% of fatal automobile/tractor trailer accident happen for a reason. That being the result of "unsafe actions of automobile drivers". People, as well as drivers, need to realize the dangers of such large trucks and pay more attention. Likewise for truck drivers as well.
The American Association of State Highway and Transportation Officials (AASHTO) conducted a series of tests. These tests were extensive field tests of roads and bridges to assess damages to the pavement. In particular they wanted to know how traffic contributes to the deterioration of pavement materials. These tests essentially led to the 1964 recommendation by AASHTO to Congress. The recommendation determined the gross weight limit for trucks to be determined by a bridge formula table. This includes table based on axle lengths, instead of a state upper limit. By the time 1970 came around, there were over 18 million truck on America's roads.
Some trailers can be towed by an accessible pickup truck or van, which generally need no special permit beyond a regular license. Such examples would be enclosed toy trailers and motorcycle trailers. Specialized trailers like an open-air motorcycle trailer and bicycle trailers are accessible. Some trailers are much more accessible to small automobiles, as are some simple trailers pulled by a drawbar and riding on a single set of axles. Other trailers also have a variety, such as a utility trailer, travel trailers or campers, etc. to allow for varying sizes of tow vehicles.
Light trucks are classified this way because they are car-sized, yet in the U.S. they can be no more than 6,300 kg (13,900 lb). These are used by not only used by individuals but also businesses as well. In the UK they may not weigh more than 3,500 kg (7,700 lb) and are authorized to drive with a driving license for cars. Pickup trucks, popular in North America, are most seen in North America and some regions of Latin America, Asia, and Africa. Although Europe doesn't seem to follow this trend, where the size of the commercial vehicle is most often made as vans.
