Practice question

On the Colorado CDL General Knowledge test, if your brakes fail while driving downhill, what should you do FIRST?

  1. Turn off the engine immediately
  2. Pump the brakes rapidly to try to build up pressure, and downshift to use engine braking
  3. Steer into oncoming traffic to slow down
  4. Jump from the vehicle

Answer: B — Pump the brakes rapidly to try to build up pressure, and downshift to use engine braking

The correct answer is shown above. Try the full quiz for additional practice.

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