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CDL Practice Test

A bank of 201 exam style questions for commercial driver license permit candidates. Every answer comes with a four part rationale: why the correct answer is right, why the others are wrong, the principle behind it, and the takeaway to remember.

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Try three sample questions

Sample question 1. PRE-TRIP: A vehicle inspection should be done ___ trip.
Answer: B. Correct: A vehicle inspection should be done before every trip. Why the other choices are wrong: doing it only weekly, only when something feels wrong, or only by a mechanic leaves problems undetected. Principle: pre-trip inspections catch defects before they cause a crash. Takeaway: inspect before every trip.
Sample question 2. PRE-TRIP: The most important reason to do a pre-trip inspection is:
Answer: D. Correct: The most important reason to do a pre-trip inspection is safety, finding problems before they cause a crash. Why the other choices are wrong: it is not to pass time, clean the truck, or save fuel. Principle: inspections are a safety check first. Takeaway: the main reason to inspect is to catch safety problems early.
Sample question 3. PRE-TRIP: During inspection, tires should be checked for ___ and tread depth.
Answer: B. Correct: Tires should be checked for proper inflation and tread depth, along with damage. Why the other choices are wrong: color, brand, and age alone do not determine tire safety. Principle: inflation and tread keep tires safe. Takeaway: check tires for proper inflation and tread; follow your CDL manual for limits.

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