California CDL Air Brakes Test

On which CMVs is ABS required by federal rule?

All trucks built before 1990 Truck tractors built on or after March 1, 1997, and air-braked trailers built on or after March 1, 1998 Only passenger vehicles Only school buses

Correct Answer:

Truck tractors built on or after March 1, 1997, and air-braked trailers built on or after March 1, 1998

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