Two Men & A Truck In Chatanooga

Beginning the the early 20th century, the 1920's saw several major advancements. There was improvement in rural roads which was significant for the time. The diesel engine, which are 25-40% more efficient than gas engines were also a major breakthrough. We also saw the standardization of truck and trailer sizes along with fifth wheel coupling systems. Additionally power assisted brakes and steering developed. By 1933, all states had some form of varying truck weight regulation.

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. 

A semi-trailer is almost exactly what it sounds like, it is a trailer without a front axle. Proportionally, its weight is supported by two factors. The weight falls upon a road tractor or by a detachable front axle assembly, known as a dolly. Generally, a semi-trailer is equipped with legs, known in the industry as "landing gear". This means it can be lowered to support it when it is uncoupled. In the United States, a trailer may not exceed a length of 57 ft (17.37 m) on interstate highways. However, it is possible to link two smaller trailers together to reach a length of 63 ft (19.20 m).

A relatable reality t.v. show to the industry is the show Ice Road Truckers, which premiered season 3 on the History Channel in 2009. The show documents the lives of truck drivers working the scary Dalton Highway in Alaska. Following drivers as they compete to see which one of them can haul the most loads before the end of the season. It'll grab you with its mechanical problems that so many have experienced and as you watch them avoid the pitfalls of dangerous and icy roads!

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.

DOT officers of each state are generally in charge of the enforcement of the Hours of Service (HOS). These are sometimes checked when CMVs pass through weigh stations. Drivers found to be in violation of the HOS can be forced to stop driving for a certain period of time. This, in turn, may negatively affect the motor carrier's safety rating. Requests to change the HOS are a source of debate. Unfortunately, many surveys indicate drivers routinely get away with violating the HOS. Such facts have started yet another debate on whether motor carriers should be required to us EOBRs in their vehicles. Relying on paper-based log books does not always seem to enforce the HOS law put in place for the safety of everyone.

The Federal Highway Administration (FHWA) is a division of the USDOT specializing in highway transportation. The agency's major influential activities are generally separated into two different "programs". The first is the Federal-aid Highway Program. This provides financial aid to support the construction, maintenance, and operation of the U.S. highway network. The second program, the Federal Lands Highway Program, shares a similar name with different intentions. The purpose of this program is to improve transportation involving Federal and Tribal lands. They also focus on preserving "national treasures" for the historic and beatific enjoyment for all.

The 1950's were quite different than the years to come. They were more likely to be considered "Knights of the Road", if you will, for helping stranded travelers. In these times truck drivers were envied and were viewed as an opposition to the book "The Organization Man". Bestseller in 1956, author William H. Whyte's novel describes "the man in the gray flannel suit", who sat in an office every day. He's describing a typical office style job that is very structured with managers watching over everyone. Truck drivers represented the opposite of all these concepts. Popular trucking songs glorified the life of drivers as independent "wanderers". Yet, there were attempts to bring back the factory style efficiency, such as using tachnographs. Although most attempts resulted in little success. Drivers routinely sabotaged and discovered new ways to falsify the machine's records.

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.

1941 was a tough era to live through. Yet, President Roosevelt appointed a special committee to explore the idea of a "national inter-regional highway" system. Unfortunately, the committee's progress came to a halt with the rise of the World War II. After the war was over, the Federal-Aid Highway Act of 1944 authorized the designation of what are not termed 'Interstate Highways'. However, he did not include any funding program to build such highways. With limited resources came limited progress until President Dwight D. Eisenhower came along in 1954. He renewed interest in the 1954 plan. Although, this began and long and bitter debate between various interests. Generally, the opposing sides were considering where such funding would come from such as rail, truck, tire, oil, and farm groups. All who would overpay for the new highways and how.

Ultra light trucks are very easy to spot or acknowledge if you are paying attention. They are often produced variously such as golf cars, for instance, it has internal combustion or a battery electric drive. They usually for off-highway use on estates, golf courses, parks, in stores, or even someone in an electric wheelchair. While clearly not suitable for highway usage, some variations may be licensed as slow speed vehicles. The catch is that they may on operate on streets, usually a body variation of a neighborhood electric vehicle. A few manufacturers produce specialized chassis for this type of vehicle. Meanwhile, Zap Motors markets a version of the xebra electric tricycle. Which, believe it or not, is able to attain a general license in the United States as a motorcycle.

Heavy trucks. A cement mixer is an example of Class 8 heavy trucks. 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 6×4 and 4x2 tractor units. Road damage and wear increase very rapidly with the axle weight. The axle weight is the truck weight divided by the number of axles, but the actual axle weight depends on the position of the load over the axles. 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 over 50 tons (49 long tons; 55 short tons).