Oregon cdl Class B Knowledge Test - 1
Number of questions: 50
Passing score: 80%
Acceptable number of errors: 10
16. When about to drive a vehicle with a dual brake system, a driver should:
A
×
Let the vehicle warm up to ensure the fuel reaches the engine.
B
√
Wait for air pressure to build in both the primary and secondary systems.
C
×
Begin driving just after the engine starts.
D
×
Pump the pedal about 20 times to build pressure, then begin driving.