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It's short for "semitrailer". The entire rig is properly called a tractor-semitrailer. It's a semitrailer because it's only part of a trailer; it only has the back set of wheels (the front wheels under the cargo area are attached to the tractor, the part with the engine and the driver's cab).
What else can I help you with?
What company has truck insurance for 18 wheelers?
Progressive and Travelers is the company witch has truck insurance for 18 wheelers. They have the best quotes on the insurance you may find they on the internet and call to this company.
Do 18 wheelers have 18 wheels?
Yes, 18 wheelers have 18 wheels.Some tractor trailers have more, some less.
How many people died in 18 wheeler accidents last year?
The statistics are not broken down by that category (i.e.: 18-wheelers, 10-wheelers, 6-wheelers, etc.). They are all classified as "commercial" vehicles.
Do girls like 18 wheelers?
# no way.
Why dont girls like 18 wheelers?
Some of them do.
What are the release dates for The Texas Wheelers - 1974 The Call 1-7?
The Texas Wheelers - 1974 The Call 1-7 was released on: USA: 17 July 1975
Do 18 wheelers have autopilot?
If you mean cruise control, yes.
Can 18 wheelers drive on a skyway in New York state?
No.
What is an 18 wheelers fuel tank made of?
Steel or aluminum.
How many 18 wheelers make a fleet?
Two or more.
Can you start a business just repoing 18 wheelers?
Yes
How many 18-wheelers on the road in the US as of 2007?
1.2 million
