2024 OR CDL Practice Test: Class B - Test 4
Based on
2024 OR CDL Handbook
12. What does a service brake system do?
A
The system that applies and releases the brakes when you use the brake pedal during normal driving.
B
The system that uses the parking brake system only to stop the vehicle during normal driving.
C
The system that applies and releases the parking brakes when you are parking.
D
None of the listed answers.