If the service line comes apart while you are driving, but the emergency line stays connected, what happens?

Nothing happens until you try to brake.. Section 6.2: If the service line breaks, air pressure is lost only when you apply the brakes. The

If the service line comes apart while you are driving, but the emergency line stays connected, what happens?

ANSWER BREAKDOWN
  • A. Incorrect. "The emergency trailer brakes will come on immediately." is not correct. If the service line breaks, air pressure is lost only when you apply the brakes. The emergency brakes won't come on immediately unless the tank pressure drops too low.
  • B. Correct. If the service line breaks, air pressure is lost only when you apply the brakes. The emergency brakes won't come on immediately unless the tank pressure drops too low.
  • C. Incorrect. "You will lose all air pressure." is not correct. If the service line breaks, air pressure is lost only when you apply the brakes. The emergency brakes won't come on immediately unless the tank pressure drops too low.
  • D. Incorrect. "The engine stops." is not correct. If the service line breaks, air pressure is lost only when you apply the brakes. The emergency brakes won't come on immediately unless the tank pressure drops too low.