Step 6 is checking the signal lights. Have someone observe from outside or use a wall reflection to verify that turn signals, brake lights, and four-way flashers are all working properly.
The CDL (Commercial Driver License) exam tests your knowledge of commercial driving rules, safety procedures, and vehicle operation. You must score 80% or higher to pass the written knowledge test. The exam covers general knowledge, air brakes, combination vehicles, and various endorsements.
This question is from the Class B CDL Knowledge Test #2 section. Practice with more questions from this category to build confidence before taking the official DMV test.
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