What does ABS (Anti-Lock Braking System) do on a bus?

a.Reduces stopping distance significantly

b.Prevents wheel lockup during hard braking, helping the driver maintain steering control

c.Eliminates the need for air brakes

d.Automatically stops the bus at railroad crossings

Explanation

ABS prevents the wheels from locking up during hard braking, which helps the driver maintain steering control. It does not necessarily shorten stopping distance but does improve directional stability.

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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 Passenger Endorsement Test #2 section. Practice with more questions from this category to build confidence before taking the official DMV test.

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