2024 MD CDL Practice Test: Class A - Test 6
Based on
2024 MD CDL Handbook
22. When starting the engine, how can you tell if the ABS system is not working on a truck with a trailer?
A
The red light on the right side of the trailer will flash three times and then stay on
B
The yellow light on the left rear of the trailer will stay on
C
All the rear lights will flash and then shut off