A commercial driver's license (CDL) is a driver's license required to operate large or heavy vehicles.
In 1976, the number one hit on the Billboard chart was "Convoy," a novelty song by C.W. McCall about a convoy of truck drivers evading speed traps and toll booths across America. The song inspired the 1978 action film Convoy directed by Sam Peckinpah. After the film's release, thousands of independent truck drivers went on strike and participated in violent protests during the 1979 energy crisis (although similar strikes had occurred during the 1973 energy crisis).
As of January 1, 2000, the Federal Motor Carrier Safety Administration (FMCSA)was establishedas its own separate administration within the U.S. Department of Transportation. This came about under the "Motor Carrier Safety Improvement Act of 1999".The FMCSAis basedin 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.
The Federal Bridge Gross Weight Formula is a mathematical formula used in the United Statesto determine the appropriate gross weight for a long distance moving vehicle, based on the axle number and spacing. Enforced bythe Department of Transportation upon long-haul truck drivers, it is used as a means of preventing heavy vehicles from damaging roads and bridges.This is especially in particular to the total weight of a loaded truck, whetherbeing usedfor commercial moving services or for long distance moving services in general.
According to the Federal Bridge Gross Weight Formula, the total weight of a loaded truck (tractor and trailer, 5-axle rig) cannot exceed 80,000 lbs in the United States.Under ordinary circumstances, long-haul equipment trucks will weight about 15,000 kg (33,069 lbs). This leaves about 20,000 kg (44,092 lbs) of freight capacity.Likewise, a loadis limitedto the space available in the trailer,normallywith dimensions of 48 ft (14.63 m) or 53 ft (16.15 m) long, 2.6 m (102.4 in) wide, 2.7 m (8 ft 10.3 in) high and 13 ft 6 in or 4.11 m high.
In order toload or unloadbotsand other cargo to and from a trailer, trailer winchesare designedfor this purpose. They consist of a ratchet mechanism and cable. The handle on the ratchet mechanism is then turned to tighten or loosen the tension on the winch cable. Trailer winches vary, some are manual while othersare motorized. Trailer winches are mosttypicallyfound on the front of the trailer by towing an A-frame.