Practice question

What is the function of the proportional valve in a vehicle's braking system?

  1. To adjust brake pressure automatically when the tires wear down
  2. To balance hydraulic pressure between the front and rear brakes to prevent the rear wheels from locking up first
  3. To release the parking brake cable when the transmission shifts to drive
  4. To control the ABS pump pulse speed

Answer: B — To balance hydraulic pressure between the front and rear brakes to prevent the rear wheels from locking up first

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: BRTA Non-Professional Driving Licence Test Practice Questions - Bangladesh Road Transport Authority (BRTA) Non-Professional Driving Licence Written Test Exam →