Commercial Driver's License

Category - Inspections

While inside the cab during a pre-trip inspection, drivers should check which of the following lighting indicators?
  1. High beam indicator
  2. Turn signals indicators
  3. Emergency four-way flashers
  4. All of the above
Explanation
Answer: D - When performing the in-cab pre-trip inspection for lighting indicators, drivers should always check the high beam, turn signals, and four-way emergency flasher indicators. If any of these indicators are not working properly, repairs should be made before leaving the area. Lighting indicators are often the only way a driver knows that a certain light system is on or off and therefore they must be in good working order at all times.
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