2024 DE CDL Practice Test: Tank - Test 5 Based on 2024 DE CDL Handbook 8. How often should trailer air tanks be drained? A Every two months. B Once a year. C Every day. D Only during warm weather. Next More 8/28 Progress 0 Errors Restart Next Next Tank - Test 5 Back to Test List Tank - Test 4 Air Brakes - Test Challenge Library 12 More DE CDL Practice Tests 34 Air Brakes - Test 35 All - Test 36 All - Test 2 37 All - Test 3 38 Tank and Hazmat - Test 39 Tank and Hazmat - Test 2 40 Class C - Test 41 Class C - Test 2 42 Class C - Test 3 43 Class C - Test 4
