Practice question

What sequence best describes the in-cab low-air and spring-brake test?

  1. Build air, shut off engine with key on, fan brakes to warning, continue until spring brakes apply
  2. Drain tanks first, then drive at highway speed
  3. Pull the parking brake first and ignore gauges
  4. Check only windshield wipers

Answer: A — Build air, shut off engine with key on, fan brakes to warning, continue until spring brakes apply

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