What is the minimum tread depth required on tires other than the steer axle?

a.1/32 inch

b.2/32 inch

c.4/32 inch

d.6/32 inch

Explanation

All tires other than steer axle tires must have a minimum tread depth of 2/32 inch. Tires below this minimum are unsafe and illegal to operate on public roads.

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About the CDL Exam

The CDL (Commercial Driver License) exam tests your knowledge of commercial driving rules, safety procedures, and vehicle operation. You must score 80% or higher to pass the written knowledge test. The exam covers general knowledge, air brakes, combination vehicles, and various endorsements.

This question is from the Class B CDL Knowledge Test #2 section. Practice with more questions from this category to build confidence before taking the official DMV test.

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