2024 DE CDL Practice Test: Air Brakes - Test Based on 2024 DE CDL Handbook 15. When the spring brakes are on, you should never: A Push down the brake pedal. B Turn on the lights. C Turn off the vehicle. Next More 15/25 Progress 0 Errors Restart Next Next Air Brakes - Test Back to Test List Tank - Test 5 All - Test Challenge Library 12 More DE CDL Practice Tests 35 All - Test 36 All - Test 2 37 All - Test 3 38 Tank and Hazmat - Test 39 Tank and Hazmat - Test 2 40 Class C - Test 41 Class C - Test 2 42 Class C - Test 3 43 Class C - Test 4 44 Class C - Test 5
