Foundation brakes are used: Before you start the test, please answer the question below regarding your insurance status. Without insurance you will not be able to drive in Ohio Do you currently have car insurance? Yes I have insurance. Great, you're all set! Click here if you still want to compare rates. No, I need insurance. Click here to compare rates from our insurance partner. 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. This questions appears in the following tests: Alaska Class A Knowledge Test Alaska Air Brakes Idaho Class B Knowledge Test Iowa Air Brakes Kentucky Class A Knowledge Test Louisiana Class A Knowledge Test Maryland Class A Knowledge Test Nebraska Air Brakes Oklahoma Class B Knowledge Test Oklahoma Air Brakes Oregon Air Brakes South Carolina Air Brakes South Dakota Air Brakes Vermont Air Brakes