Popular among campers is the use of lightweight trailers, such as aerodynamic trailers. These canbe towed bya small car, such as the BMW Air Camper. Theyare builtwith the intent to lower the tow of the vehicle, thus minimizing drag.
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.
Business routes generally follow the original routing of the numbered route through a city or town.Beginning in the 1930s and lasting thru the 1970s was an era marking a peak in large-scale highway construction in the United States. U.S. Highways and Interstates weretypicallybuilt in particular phases.Their first phase of development began with the numbered route carrying traffic through the center of a city or town.The second phase involved the construction of bypasses around the central business districts of the towns they began.As bypass construction continued, original parts of routes that had once passed straight thru a city would often become a "business route".
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,justlike 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 truckswere determinedand 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 amaximumspeed of 15 miles per hour (24km/h) continued to limit the use of these trucks tomostlyurban areas.
The most basic purpose of a trailer jack is to lift the trailer to a height that allows the trailer to hitch or unhitch to and from the towing vehicle. Trailer jacks may alsobe usedfor the leveling of the trailer during storage. To list a few common types of trailer jacks are A-frame jacks, swivel jacks, and drop-leg jacks. Other trailers, such as horse trailers, have a built-in jack at the tongue for this purpose.