Practice Quiz

Commercial Driver's License

Category - Difficult Driving

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When coming down mountain slopes, drivers should do all of the following except:
  1. Select a low gear before beginning the descent.
  2. Select a high gear before beginning the decent.
  3. Use the engine as the primary brake.
  4. Monitor their speed closely.
Explanation
Answer: B - When driving down mountain slopes or hills, drivers should be in a low gear before they begin the descent. It is imperative that they not be in mid or high gear as this will cause the vehicle to pick up too much speed. Using a low gear allows the engine to hold back the vehicle speed and act as the primary braking method for downhill travel.
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