2024 WY CDL Practice Test: Double and Triples - Test 3 Based on 2024 WY CDL Handbook 10. What should you use to test the trailer brakes? A A multimeter. B A compass. C A battery. D A magnet. Next More 10/29 Progress 0 Errors Restart Next Next Double and Triples - Test 3 Back to Test List Double and Triples - Test 2 Double and Triples - Test 4 Challenge Library 12 More WY CDL Practice Tests 27 Double and Triples - Test 4 28 Double and Triples - Test 5 29 Tank - Test 30 Tank - Test 2 31 Tank - Test 3 32 Tank - Test 4 33 Tank - Test 5 34 Air Brakes - Test 35 All - Test 36 All - Test 2