A typical triple-trailer rig is a tractor pulling three semitrailers joined by two converter dollies. How many pivot (articulation) points does it have?

Answer options

Why

Each joint that lets one unit swing independently of another is a pivot point. This rig has five: the tractor's fifth wheel under the first trailer, plus a pintle hook and a dolly fifth wheel at each of the two dolly connections.

About this question

Topic: Doubles and triples   License: CDL

Part of these practice sets:

• Pulling Doubles and Triples

Where it applies: Asked in every state.

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This question is part of Pulling Doubles and Triples (24 questions). Take the full set and check your score.

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