Q
One function of the emergency air line is to:
Combination Vehiclesmedium
ASupply fuel to the engine
BControl the emergency brakes
CRegulate air temperature
Detailed Explanation
The correct answer is "Control the emergency brakes". This is based on federal CDL regulations and safety standards.
Correct Answer: Control the emergency brakes
Ready to practice for real?
Take our free, full-length Combination Vehicles practice test. Simulates the actual DMV exam with timed questions.
Start Practice TestRelated Questions
35. Under good driving conditions, you should leave at least one second of space between your vehicle and the vehicle ahead for every a. 10 b. 20 feet of your vehicle's length. c. 30
combination-vehiclesmedium
The 'crack-the-whip' effect can:
combination-vehiclesmedium
17. The front trailer supports are up and the trailer is resting on the tractor. Make sure:
combination-vehiclesmedium
The trailer hand valve should:
combination-vehiclesmedium
To test the trailer service brakes, you should:
combination-vehiclesmedium