41. Which of these statements about engine overheating is true?
Detailed Explanation
Opening a hot, pressurized cooling system can release scalding coolant and steam. Let it cool before removing its cap.
Official reference: New York CDL-10, Section 2.14.1: Engine CoolantCorrect Answer: You should never remove the radiator cap on a pressurized system until the system has cooled.
Why This Matters on the CDL Test
Stop safely to investigate overheating.
How to Remember It
Hot and pressurized: keep closed.
Answer Review
Pressure makes opening the hot system dangerous.
Why the other answers are weaker
- If your engine overheats within 20 miles of the end of your trip, you should complete the trip and then check the problem.Trip distance does not make overheating safe.
- You should never shut off an overheated engine until it cools.The handbook coolant-adding procedure starts with shutting the engine off.
Test-Day Checklist
- Read the question once for the topic, then read it again for the exact CDL action being tested in General Knowledge.
- Eliminate answers that sound convenient but skip an inspection, warning sign, or safety step.
- Say the correct rule out loud before moving on so you can recognize it when the exam changes the wording.
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Keep Studying General Knowledge
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State CDL Practice Paths
After you understand this answer, use a state practice path to connect the federal CDL rule with the DMV test pages drivers search for most.