Combination #2

FREE CDL Combination Vehicles Practice Test Online | Nevada 2022

Train for FREE online with our Nevada 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 NV combination license in 2021, practice as much as.. Read More

Train for FREE online with our Nevada 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 NV combination license in 2021, 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.

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1 . Trailers built before 1975 are:

Prohibited from public roadways. Trailers built before 1975 are not required to have spring brakes. When parking a trailer without spring brakes, be sure to use wheel chocks to prevent the trailer from rolling.

2 . When the wheels of a trailer lock up:

They will likely go flat. A trailer may swing out and strike other vehicles if its wheels lock up. This is especially likely with lightly-loaded trailers.

3 . The trailer hand valve:

Should only be used when transporting cargo. The trailer hand valve should not be used for parking. This could cause all of the air to leak out of the braking system, resulting in the brakes releasing. Instead, use the parking brake.

4 . During a trip, landing gear should be:

Landing gear, or trailer supports, should always be completely raised before a vehicle is driven. Landing gear that is not entirely raised could catch on railroad tracks or other hazards on the roadway.

5 . If a load is placed on one side of a trailer, the trailer:

Have improved steering. If the weight of a load is placed primarily one side of a trailer, the trailer may lean, increasing the risk of a rollover.

6 . If colors are being used to distinguish glad hands, which color is used for emergency lines?

Red When trailer air lines are color-coded, the service lines are generally blue and the emergency lines are generally red.

7 . If the emergency air line loses pressure:

The tractor protection valve keeps air in the trailer's braking system should the trailer break away or develop a leak. A loss of air pressure in the emergency line will cause the tractor protection valve to open and the emergency trailer brakes to activate.

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