Practice question

To activate the Anti-lock Brake System, how many times do you need to pump the brake?

  1. Once
  2. Twice
  3. Three times
  4. Not at all

Answer: D — Not at all

The Anti-lock Brake System (ABS) is designed to prevent the wheels from locking up during hard braking or slippery conditions, allowing the driver to maintain steering control. When ABS is activated, it automatically modulates brake pressure many times per second without the need for the driver to pump the brakes. In a vehicle equipped with ABS, you should not pump the brakes at all. Instead, a firm and steady pressure should be applied to the brake pedal. The system will take care of the braking modulation on its own, which helps to enhance safety and improve stopping distances under challenging conditions. Understanding this function is crucial for any driver, as it can make a significant difference in emergency braking situations.

Practice more: Virginia Driver Education and Traffic Safety (VADETS) Practice Test →