The Tractor Protection Valve helps keep air in the tractor if:

The trailer breaks away or develops a bad leak.. Section 6.2: The tractor protection valve keeps air in the tractor brake system if the

The Tractor Protection Valve helps keep air in the tractor if:

ANSWER BREAKDOWN
  • A. Incorrect. "The engine stops." is not correct. The tractor protection valve keeps air in the tractor brake system if the trailer breaks away or develops a bad leak.
  • B. Correct. The tractor protection valve keeps air in the tractor brake system if the trailer breaks away or develops a bad leak.
  • C. Incorrect. "You park on a hill." is not correct. The tractor protection valve keeps air in the tractor brake system if the trailer breaks away or develops a bad leak.
  • D. Incorrect. "It is raining." is not correct. The tractor protection valve keeps air in the tractor brake system if the trailer breaks away or develops a bad leak.