Question Foundation brakes are used: Answers Only at the front wheels. Only at the rear wheels. Only at the driver’s side wheels. At each wheel. Explanation Foundation brakes are used at each wheel. The most common type is the S-cam drum brake. This questions appears in the following tests: Colorado Class B Knowledge Test Illinois Air Brakes Massachusetts Class B Knowledge Test Mississippi Class A Knowledge Test Nebraska Air Brakes New Jersey Air Brakes North Carolina Air Brakes Oregon Class A Knowledge Test Oregon Air Brakes Pennsylvania Class B Knowledge Test Pennsylvania Air Brakes South Carolina Air Brakes South Dakota Air Brakes South Dakota Air Brakes Texas Class A Knowledge Test Wisconsin Air Brakes