2024 MA CDL Practice Test: Class B - Test 3
Based on
2024 MA CDL Handbook
9. When using a vehicle with air brakes, the parking needs to be used _______.
A
A round, yellow, push-pull control knob.
B
A diamond-shaped, yellow, push-pull control knob.
C
A elliptic, yellow, push-pull control knob.
D
A triangle, yellow, push-pull control knob.