What Are the Standard Dimensions of an 18-Wheeler Trailer?

By Staff WriterLast Updated Apr 11, 2020 9:15:13 AM ET
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The U.S. Department of Transportation states the maximum width for commercial motor vehicles is 102.36 inches, with a length of anywhere from 48 to 53 feet and a height of 13 to 14 feet. There is no legal height limit for the federal government, but the individual states set heights at which trailers can travel.

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