What is the reaction distance at 55 mph?

a.142 feet

b.61 feet

c.216 feet

d.45 feet

Explanation

At 55 mph, reaction distance is approximately 61 feet. This is the distance your vehicle travels from the time your brain recognizes a hazard until your foot physically pushes the brake pedal.

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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 #1 section. Practice with more questions from this category to build confidence before taking the official DMV test.

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