Practice question

What happens if the emergency and service glad-hands are cross-connected?

The trailer brakes will work normally
Only the tractor brakes will be affected
The ABS will engage automatically
The trailer service brakes will not work and the trailer emergency brakes may release without supply

Answer: D — The trailer service brakes will not work and the trailer emergency brakes may release without supply

The correct answer is shown above. Try the full quiz for additional practice.