Practice Quiz

Commercial Driver's License

Category - Emergencies

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Brake failure on steep downgrades can be lethal. In the event of a brake failure on a downgrade, commercial drivers should:
  1. Immediately look for an escape ramp
  2. Shift into a higher gear to help slow the vehicle.
  3. Avoid using escape ramps and escape hills as they do not work.
  4. None of the above
Explanation
Answer: A - The best way to prevent brake failure on downgrades is to go slowly and brake properly. However, if the brakes do fail, drivers often have only one real option and that is to use escape ramps or escape hills. Most steep grades will have some type of emergency ramp available, but this is not always the case. Commercial drivers should check their route before departure using maps or other information to learn where escape ramps are located. This preparation can be especially important if traveling in mountainous areas.
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