Ask the Times

By Times Wires
Published September 20, 2007

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How many total semitrailer trucks are there in the United States?

There were 1,871,991 registered truck tractors and 5,304,567 registered trailers and semitrailers in the United States in 2005, according to statistics from the Federal Highway Administration.

Compiled from Times staff and wire reports. To submit a question, e-mail answers@tampabay.com or call 727 893-8179, toll-free, 1-800-333-7505, ext. 8179.