2024 AR CDL Practice Test: Air Brakes - Test Based on 2024 AR CDL Handbook 25. If the spring brakes are on, you should: A Not use the brake pedal. B Move the steering wheel. C Press the accelerator. Grade More 25/25 Progress 0 Errors Restart Grade Grade Air Brakes - Test Back to Test List Tank - Test 5 All - Test Challenge Library 12 More AR 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