You are driving a combination vehicle. The trailer breaks away. The air lines are pulled apart. What stops the air from escaping the tractor?

The tractor protection valve.. Section 6.2: The tractor protection valve closes automatically to keep air in the tractor.

You are driving a combination vehicle. The trailer breaks away. The air lines are pulled apart. What stops the air from escaping the tractor?

ANSWER BREAKDOWN
  • A. Correct. The tractor protection valve closes automatically to keep air in the tractor.
  • B. Incorrect. "The emergency brakes." is not correct. The tractor protection valve closes automatically to keep air in the tractor.
  • C. Incorrect. "The hand valve." is not correct. The tractor protection valve closes automatically to keep air in the tractor.
  • D. Incorrect. "The compressor." is not correct. The tractor protection valve closes automatically to keep air in the tractor.