Stop light switches:

Turn on the brake lights to warn drivers behind you.. Section 5.1: The stop light switch turns on the brake lights when you put on the air

Stop light switches:

ANSWER BREAKDOWN
  • A. Incorrect. "Tell you when you need more air." is not correct. The stop light switch turns on the brake lights when you put on the air brakes.
  • B. Correct. The stop light switch turns on the brake lights when you put on the air brakes.
  • C. Incorrect. "Turn on the rear emergency lights." is not correct. The stop light switch turns on the brake lights when you put on the air brakes.
  • D. Incorrect. "Tell you when the air compressor cuts in." is not correct. The stop light switch turns on the brake lights when you put on the air brakes.