Combination Vehicles Practice Test | West Virginia 2024 #2 Page 3 of 3
Train for FREE online with our West Virginia CDL combination vehicle test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a WV combination license in 2024, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a combination license may vary from state to state.
15 . How many air lines does a combination vehicle have?
Every combination vehicle has two air lines: the service line and the emergency line.
16 . Rollovers happen when:
Rollovers happen when a vehicle is driven too fast. To reduce the risk of rollover, make sure the weight of cargo is loaded low to the ground, and that you take turns and curves slowly.
17 . Starting in which year were newly manufactured trailers required to have ABS?
All trailers and converter dollies manufactured on or after March 1, 1998 must be equipped with Anti-Lock Braking Systems (ABS).
18 . Combination vehicles:
Combination vehicles are usually heavier and longer than single commercial vehicles. For these reasons, they usually require more driving skill than single commercial vehicles.
19 . If a load is placed on one side of a trailer, the trailer:
If the weight of a load is placed primarily one side of a trailer, the trailer may lean, increasing the risk of a rollover.
20 . A shut-off valve:
Shut-off valves are used in air supply lines to control the passage of air from one trailer to another. The rear shut-off valve should always be closed to prevent air from leaving the braking system.
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