Prior tothe 20th century, freight was generally transported overland via trains and railroads.During this time, trains were essential, and they werehighlyefficient at moving large amounts of freight.But, they could only deliver that freight to urban centers for distribution by horse-drawn transport.Though there were several trucks throughout this time, theywere usedmore as space for advertising that for actual utility.At this time, the use of range for trucks was quite challenging.The use of electric engines, lack of paved rural roads, and small load capacities limited trucks to most short-haul urban routes.
In 1938, the now-eliminated Interstate Commerce Commission (ICC) enforced the first Hours of Service (HOS) rules. Drivers became limited to 12 hours of work within a 15-hour period.At this time, work included loading, unloading, driving, handling freight, preparing reports, preparing vehicles for service, or performing any other duty in relation to the transportation of passengers or property.
The ICC intended for the 3-hour difference between 12 hours of work and 15 hours on-duty tobe usedfor meals and rest breaks.This meant that the weekly maxwas limitedto 60 hours over 7 days (non-dailydrivers), or 70 hours over 8 days (daily drivers). With these rules in place, it allowed 12 hours of work within a 15-hour period, 9 hours of rest, with 3 hours for breaks within a 24-hour day.
The FMCSA has established rules to maintain and regulate the safety of the trucking industry.According to FMCSA rules, driving a goods-carrying CMV more than 11 hours or to drive after having been on duty for 14 hours, is illegal.Due to such heavy driving, they need a break to complete other tasks such as loading and unloading cargo, stopping for gas and other required vehicle inspections, as well as non-working duties such as meal and rest breaks.The 3-hour difference between the 11-hour driving limit and 14 hour on-duty limit gives drivers time to take care of such duties.In addition, after completing an 11 to 14 hour on duty period, the driver muchbe allowed10 hours off-duty.
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 testsessentiallyled to the 1964 recommendation by AASHTO to Congress.The recommendation determined the gross weight limit for trucks tobe determined bya 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.
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.