Practice Quiz

Commercial Driver's License

Category - Standard Driving

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Which of the following is TRUE concerning commercial vehicles with automatic transmissions?
  1. It is okay to force the transmission into a lower gear at high speeds.
  2. Automatic transmissions do not need to be shifted.
  3. It is not okay to force the transmission into a lower gear at high speeds.
  4. None of the above applies to automatic transmissions.
Explanation
Answer: C - Down shifting an automatic transmission into a lower gear while traveling at a high speed can destroy the transmission and lead to a complete loss of all braking power from the engine. This scenario can be very dangerous if the vehicle is traveling down a hill. Drivers should always reduce speed before attempting to down shift an automatic transmission.
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