combination vehicle
组合车辆
This page is in English. Where a word has a checked translation, it appears after the English term.
A tractor or truck pulling one or more trailers.
Tractor-trailers, doubles, triples and a straight truck with a trailer are all combinations. They are heavier and longer, need more skill, and roll over more easily in quick turns.
Tested: what makes combinations different to drive and inspect, what happens when the air lines separate, and how to couple safely.
See 19 questions on the Combination Vehicles testSee also: doubles, rollover, semitrailer, tractor, triples
Source: CDL manual, 6checked
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