This online practice test covers all of the information needed to pass the CDL knowledge test for driving safely with double and triple trailers.
Drivers intending to pull more than one trailer must have a doubles & triples endorsement on their commercial driver license. To get the endorsement you must pass a knowledge test on Section 7 of the CDL manual. To obtain this endorsement, you DO NOT need to perform the skills test with more than one trailer.
The Doubles and Triples written test contains twenty (20) multiple choice questions. Drivers must answer 16 questions correctly in order to receive a passing score of at least 80%.
The Doubles & Triples exam will test you on the following topics covered in Chapter 7 of your state CDL manual:
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