Class 4 Commercial Driver Practice · Question
If you experience a total brake failure while driving on a level roadway, what is the first sequence of actions you should take?
If your brakes fail, downshifting uses the engine's compression to slow the vehicle. Pumping the brakes may build up enough hydraulic pressure to stop if the fa
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Question: If you experience a total brake failure while driving on a level roadway, what is the first sequence of actions you should take?
Answer options: ✅ Downshift to a lower gear and pump the brake pedal rapidly
- Turn off the ignition immediately to stop the engine
- Shift the vehicle into neutral and coast to a stop
- Rapidly pull the emergency parking brake as hard as possible
Correct answer: Downshift to a lower gear and pump the brake pedal rapidly
Explanation: If your brakes fail, downshifting uses the engine's compression to slow the vehicle. Pumping the brakes may build up enough hydraulic pressure to stop if the failure is partial. The parking brake should be used carefully to avoid a skid.
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Question explanations
- What should you do if your accelerator pedal sticks while you are driving?
- What type of information should a Class 4 driver generally NOT include in their daily trip records or logbook
- When operating a taxi or small bus, when are you required to ensure passengers are using seatbelts?
- What is the correct procedure for a small bus driver approaching an uncontrolled railway crossing?
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