2024 CO CDL Practice Test: Class A - Test 6 Based on 2024 CO CDL Handbook 9. Overloading your vehicle may have bad effects on which of the following? A Steering. B Speed control. C All of the listed answers. D Braking. Next More 9/30 Progress 0 Errors Restart Next Next Class A - Test 6 Back to Test List Class A - Test 5 Class A - Test 7 Challenge Library 12 More CO CDL Practice Tests 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 15 Class B - Test 7 16 HazMat - Test