2024 NM CDL Practice Test: Class A - Test 4 Based on 2024 NM CDL Handbook 4. Where is the braking mechanism located? A Outside the engine bay. B In the engine bay. C Outside of a drum brake. D Inside of a drum brake. Next More 4/29 Progress 0 Errors Restart Next Next Class A - Test 4 Back to Test List Class A - Test 3 Class A - Test 5 Challenge Library 12 More NM CDL Practice Tests 5 Class A - Test 5 6 Class A - Test 6 7 Class A - Test 7 8 Class A - Test 8 9 Class B - Test 10 Class B - Test 2 11 Class B - Test 3 12 Class B - Test 4 13 Class B - Test 5 14 Class B - Test 6