What is required regarding vehicle restraint during an ASM test?

• A. The vehicle must be restrained, and wheel chocks are not required.
• B. The vehicle must be restrained with the parking brake engaged.
• C. The vehicle must be restrained, and wheel chocks should be in place.
• D. Wheel chocks alone are sufficient without restraint

Answer: (C)

During an ASM test, the vehicle must be kept from moving. The test involves applying load and running the drivetrain on a dynamometer, which can push the car in unpredictable ways. To keep everyone safe and ensure accurate results, the vehicle needs to be properly restrained and wheel chocks must be in place. The restraint holds the car in position if the brakes or other systems fail or if the vehicle shifts, while the wheel chocks block any rolling of the wheels. Using wheel chocks alone is not enough, and relying on the parking brake alone may not provide sufficient protection under testing conditions. Together, restraint and wheel chocks prevent motion in all directions, safeguarding the operator and the equipment.