Loss of air pressure in the emergency line causes:
A. The relay valves to close.
B. An increase in air pressure to the service line.
C. The trailer's emergency brakes to come on.
Answer: C. The trailer's emergency brakes to come on.
A. The relay valves to close.
B. An increase in air pressure to the service line.
C. The trailer's emergency brakes to come on.
Answer: C. The trailer's emergency brakes to come on.
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.