Practice question

Clearance lights on a commercial motor vehicle serve what primary purpose?

  1. To illuminate the road directly in front of the vehicle
  2. To indicate the overall width and height of the vehicle to other drivers, especially at night
  3. To signal lane changes
  4. To provide lighting inside the cargo area

Answer: B — To indicate the overall width and height of the vehicle to other drivers, especially at night

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Practice more: Tennessee CDL General Knowledge Practice Questions - Tennessee Commercial Driver License General Knowledge Test Exam →