2024 NC CDL Practice Test: Class A - Test 8 Based on 2024 NC CDL Handbook 11. How does excessive heat affect service brakes? A All of the listed answers. B Chemical changes in the brake lining. C To fail. D To fade. Next More 11/29 Progress 0 Errors Restart Next Next Class A - Test 8 Back to Test List Class A - Test 7 Class B - Test Challenge Library 12 More NC CDL Practice Tests 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 15 Class B - Test 7 16 HazMat - Test 17 HazMat - Test 2 18 HazMat - Test 3