You need to park a vehicle with air brakes overnight in freezing temperatures. What should you do?
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Correct!
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Correct answer to question 11 (Air Brakes): Chock the wheels, and consider leaving the parking brake off if there is a risk of it freezing set
Why
In freezing conditions the parking brake can freeze in the applied position; using wheel chocks to hold the vehicle and leaving the parking brake off avoids that risk.
Updated: November 2026
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