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2024 ID CDL Practice Test: Class B - Test 4

12. What does a service brake system do?
A
The system that applies and releases the parking brakes when you are parking.
B
The system that applies and releases the brakes when you use the brake pedal during normal driving.
C
None of the listed answers.
D
The system that uses the parking brake system only to stop the vehicle during normal driving.
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