Question

What tells you how much pressure is in your vehicle's air tanks?

Answers

The supply pressure gauge

The ABS malfunction lamp

The tractor protection valve

Explanation

A vehicle that is equipped with air brakes must also be equipped with a supply pressure gauge. This gauge tells the driver how much air pressure is in each of the vehicle's air tanks.

This questions appears in the following tests:

Alabama Class A Knowledge Test

Connecticut Class B Knowledge Test

Delaware Air Brakes

Hawaii Class B Knowledge Test

Idaho Bus

Iowa Air Brakes

Louisiana Air Brakes

Maine Class A Knowledge Test

Maine Double

Michigan Class B Knowledge Test

Michigan Air Brakes

Mississippi Class A Knowledge Test

Montana Air Brakes

New Hampshire Class B Knowledge Test

North Carolina Double

Ohio Class A Knowledge Test

Ohio Air Brakes

Vermont Double

Virginia Air Brakes

Washington Air Brakes

Wisconsin Air Brakes

Wyoming Air Brakes