Practice Quiz

Commercial Driver's License

Category - Inspections

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When inspecting the tires, drivers should ensure that:
  1. Front tires have at least 4/32 inch of tread depth
  2. Non-front tires have at least 2/32 inch tread depth
  3. No tires have signs of fabric showing through sidewall or tread
  4. All of the above
Explanation
Answer: D - When inspecting tires on commercial vehicles, drivers must ensure that they have enough tread. For front tires, a minimum of 4/32 inch is required. For other tires, a minimum of 2/32 inch of tread is required. While performing this inspection, drivers should also look for any damage to the tread or sidewall and ensure that the air pressure is correct.
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