How should you brake in an emergency in a vehicle with working ABS?

• A.Pump the pedal quickly so ABS can count the applications
• B.Apply the brakes only in short stabs and release them completely each time
• C.Apply the brakes firmly and steadily as needed and steer around hazards, without pumping the pedal
• D.Use the parking brake instead of the service brake

Why

Pumping defeats the system by repeatedly removing the pressure ABS is trying to control. With ABS working, steady firm braking lets the controller modulate each wheel while the rolling tires still respond to steering.

Manual topic: Air Brakes - ABS · From the Air Brakes practice bank (AB-199).

Practice this subject as a full test

More ABS & Anti-Skid questions

• What is the main job of an antilock braking system (ABS) on a truck?
• The yellow ABS malfunction lamp stays on after the startup check while you are driving. What does it mean?
• What should a tractor ABS lamp normally do when the ignition is first turned on?
• Does ABS guarantee a shorter stopping distance on every road surface?
• Why does keeping the front wheels rolling under hard braking matter so much?