Question

How do you tell if your trailer's ABS system is working normally?

Accepted Answer

The indicator light will flash several times, then go out.

Answer

The indicator light will go on and remain on.

Answer

The indicator light will go on—until the trailer air tank is pressurized to 45 PSI (or more).

Answer

The indicator light will go on while the parking brake is set.

Question 33 - Combination Vehicles Test Practice Test for the CDL