What should you do when the ABS malfunction lamp indicates a loss of ABS control at one or more wheels?
Correct answer: B. – Drive and brake normally, but have the ABS serviced soon
If ABS is not working, the vehicle still has its normal braking functions. Continue to drive and brake in the usual controlled manner rather than pumping the pedal or using only the parking brake. The malfunction should be serviced soon because ABS assistance may not be available during hard braking.
Source: 2024 Wyoming Commercial Driver License Manual — § 2.18.7, “Braking If ABS Is Not Working”

