The 'Modulating Control Valve' allows you to:

Control the spring brakes gradually if the service brakes fail.. Section 5.1: The modulating control valve allows you to apply the spring

The 'Modulating Control Valve' allows you to:

ANSWER BREAKDOWN
  • A. Correct. The modulating control valve allows you to apply the spring brakes gradually.
  • B. Incorrect. "Control the radio." is not correct. The modulating control valve allows you to apply the spring brakes gradually.
  • C. Incorrect. "Adjust the seat." is not correct. The modulating control valve allows you to apply the spring brakes gradually.
  • D. Incorrect. "Change gears." is not correct. The modulating control valve allows you to apply the spring brakes gradually.