How can a driver monitor a dual air brake system while driving?

• A.By listening for the exhaust brake tone
• B.By watching only the engine oil pressure gauge
• C.By checking the fuel gauge at each stop
• D.By watching two separate air pressure gauges, or one gauge with two needles, for the primary and secondary tanks

Why

Dual systems have a pressure readout for each circuit so a loss in one tank is visible right away. A falling needle on either side warns the driver to stop safely before braking is seriously reduced.

Manual topic: Air Brakes - Dual Air Brake Systems · From the Air Brakes practice bank (AB-004).

Practice this subject as a full test

More Dual Air Brake System & Components questions

• What is the main purpose of a dual air brake system on a modern truck?
• In a dual air brake system, what does the primary system typically control?
• In a dual air brake system, what does the secondary system typically control?
• If one circuit of a dual air brake system fails completely, what should the driver expect?
• What part applies the service brakes when air pressure is delivered to it at each wheel?