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Doubles and Triples
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CDL Practice Test
General Knowledge
Air Brakes
Combination Vehicles
Doubles and Triples
Tanker Vehicles
Hazardous Materials
Transporting Passengers
CDL Transporting Passengers Practice Test
Question 1 of 3
When stopped at a railroad crossing you should open your front door:
A
If it improves your ability to see or hear an approaching train
B
Always
C
Never
D
If the weather permits
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