CDL · Air brakes

Once the spring brakes have been set, which of these is the right practice?

Correct answer: Keep your foot off the brake pedal.

Answer options

  1. APump the brake pedal a few times
  2. BPress down on the accelerator
  3. CKeep your foot off the brake pedal Correct

Why

Pressing the brake pedal while the spring brakes are set adds air-pressure force on top of the spring force, and the two together can damage the brakes. Not every system is built to prevent this, so make a habit of leaving the pedal alone.

About this question

Topic: Air brakes   License: CDL

Part of these practice sets:

Where it applies: Asked in every state.

Practice the whole set

This question is part of Checking and Using Air Brakes (15 questions). Take the full set and check your score.

Practice Checking and Using Air Brakes

Practice on your phone.

Practice here in your browser, or use the app with the same questions and explanations. It's free on the App Store.