Practice Quiz

Commercial Drivers License Exam Prep

Category - CDL

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When performing ABS inspections on trailers, the yellow light on the left rear of the trailer should do what to indicate ABS is working properly?
  1. Come on and stay on.
  2. Come on and then blink.
  3. Come on and then go out.
  4. Do nothing; it only lights when there is a problem.
Explanation
Answer: C - When inspecting trailers with ABS, the yellow light on the left rear of the trailer should come on and then go off. If the light stays on, there is a problem with the ABS. If the light blinks, there is probably a problem with its wiring. Trailers that fail the ABS test should be inspected by qualified personnel before being put into service.
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