Things You Wanted to Know About Big Rigs- But Were Afraid to Ask

*The average semi truck and trailer is 70 to 80 feet long - 4 of them end to end make a football field.
*Depending on road conditions, weight of the load and several other factors, the length of time to stop an eighteen wheeler is 40% greater than that of an automobile. To be sure, it takes a much greater time to stop than an automobile... period.
*Trucks only have 10 brakes NOT eighteen as some have told me they thought. Trucks made now are required to have anti-lock brakes.
*The most common amount of gears in an 18 wheeler today is 10 forward and 2 reverse gears. Although they can range from 9, 10, 13, 15, and 18 gears!
*The flaps underneath the semi truck trailer are actually there to improve performance. Wind skirts under the trailer significantly reduce wind resistance and reduce airflow around the trailer. This is a big fuel economy benefit.
*According to the Department of Transportation, freight tonnage is expected to increase 70 percent between 1998 and 2020.
*In 1919 C.L. Cummins invented the first semi-truck diesel engine. In the 1930s Peterbilt designed the semi-truck body.
*While the cost of semi-truck insurance will vary by insurance provider, drivers can expect the monthly cost of insurance for a semi-truck to be an average of 10 to 30 times higher than the monthly cost of insurance for a personal vehicle (due to the increased injury potential of a truck accident).
*Most semi tractors have powerful engines and a manual transmission with between 12 and 18 gears. These rigs are typically configured with three axles and 10 wheels--two on the front axle and dual tires on both sides of the rear axles.
*Many semi tractors feature sleeping quarters behind the cab. These accommodations may range from a sleeping a bunk to miniature efficiencies decked out with microwave ovens and refrigerators and even TVs. CB radios and thunderously loud air horns are other common semi tractor accessories.
*Since fuel economy has become a crucial factor in freight transportation, the designers of Freightliner's new Cascadia semi tractor used the results from 2,500 hours of aerodynamic tests in a wind tunnel to improve its mileage capabilities. In addition to a lightweight aluminum cab that is both wider and quieter than other semi tractors, the Cascadia features ergonomic controls designed specifically for driver comfort. But these innovations are not cheap--the Cascadia is priced at more than $120,000.
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