Question Foundation brakes are used: Answers Only on the front wheels of a vehicle. Only on the rear wheels of a vehicle. On each wheel of a vehicle. Explanation Foundation brakes are used on each wheel of a CMV. The most common type of foundation brake is the s-cam drum brake. Take a FREE Practice Test Now This questions appears in the following tests: Nebraska Knowledge Test Class A , Vermont Knowledge Test Class A , New Mexico Knowledge Test Class B , Arizona Double , Missouri Air Brakes , Nevada Air Brakes , Oregon Air Brakes , Virginia Air Brakes ,