Q
18. You have a major leak in the service line and you put on the brakes. Service air pressure will escape and cause the:
Combination Vehiclesmedium
ATrailer tank pressure to be lost.
BTrailer emergency brakes to come on.
CTractor spring brakes to lock on.
Detailed Explanation
The correct answer is "Trailer emergency brakes to come on.". This is based on federal CDL regulations and safety standards.
Correct Answer: Trailer emergency brakes to come on.
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
48. After you have coupled the trailer you should have to raise the landing gear by using:
combination-vehiclesmedium
72. What is a tractor jackknife?
combination-vehiclesmedium
79. What is the emergency air line for?
combination-vehiclesmedium
101. There are two things that a driver can do to prevent a rollover. They are (1) go slowly around turns; (2) keep:
combination-vehiclesmedium
96. A driver crosses the airlines when hooking up an old trailer with no spring brakes.
combination-vehiclesmedium