New Jersey Air Brakes Practice Test 2026 – The All-in-One Guide to Master Your Exam Success!

Question: 1 / 400

What does a brake warning light indicate in an air brake system?

High brake pad wear

Low air pressure or malfunction in the system

The brake warning light in an air brake system serves as an important alert for the driver. It indicates low air pressure within the system or a malfunction. When the air pressure drops below a certain threshold, the light is triggered to notify the driver of a potentially dangerous situation that could compromise the vehicle's braking ability. This is critical because air brake systems rely on compressed air to function effectively; insufficient pressure can lead to catastrophic brake failure.

In air brake systems, the light is designed to catch the driver's attention and prompt inspection of the components for leaks, damage, or system faults. Understanding this warning is vital, as it plays a key role in maintaining safety on the road. Recognizing this indicator allows for timely maintenance or correction, ensuring that the braking system operates as intended.

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Need for brake fluid replacement

Excessive engine Rev during braking

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