What is 'Brake Lag'?

The time it takes for the air to flow through the lines to the brakes.. Section 5.4: Brake lag is the time required for the air to travel

What is 'Brake Lag'?

ANSWER BREAKDOWN
  • A. Incorrect. "The time it takes for the driver to see a hazard." is not correct. Brake lag is the time required for the air to travel from the tank to the brake chambers (about 1/2 second).
  • B. Correct. Brake lag is the time required for the air to travel from the tank to the brake chambers (about 1/2 second).
  • C. Incorrect. "The time it takes to stop." is not correct. Brake lag is the time required for the air to travel from the tank to the brake chambers (about 1/2 second).
  • D. Incorrect. "The time it takes to release the parking brake." is not correct. Brake lag is the time required for the air to travel from the tank to the brake chambers (about 1/2 second).