header bg

Scan QR code or get instant email to install app

Question:

During normal driving, spring brakes are usually held back by which of the following?

A Air pressure.
explanation

Powerful springs are held back by air pressure when driving. If the air pressure is removed, the springs put on the brakes. [California Commercial Driver Handbook]

Related Information

Comments

c well

2 years ago

I have passed every single test the first go around, so this app is a life saver for sure because years ago I was studying from a text book and hated it and also wasn't doing well with the test when they came about. However I have successfully pass the combination, Air brake, General knowledge and also my Hazmat test all the very first attempt.

myeshanothinjazzy

2 years ago

This app along with YouTube videos helped me pass my permit test!!

Mohamed Gedi

2 years ago

Very clear

Leave a Reply

Your email address will not be published.

*