2024 NC CDL Practice Test: Double and Triples - Test 5 Based on 2024 NC CDL Handbook 25. On a wet road, how much should you reduce your speed? A By about one-half B By about one-quarter C By about one-third Next More 25/29 Progress 0 Errors Restart Next Next Double and Triples - Test 5 Back to Test List Double and Triples - Test 4 Tank - Test Challenge Library 12 More NC CDL Practice Tests 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 37 All - Test 3 38 Tank and Hazmat - Test