20 Tests

CDL Combination Vehicles Practice Test Online | Virginia 2021

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

Train for FREE online with our 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 VA 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 . Rollovers happen when:

Rollovers occur when drivers turn or change lanes too quickly.

2 . The best way to recognize that your trailer has started to skid is by:

The easiest way to become aware that your trailer has begun to jackknife is to observe it in your mirrors. Checking your trailer in your mirrors will also allow you to spot any skidding at the earliest possible moment.

3 . If a trailer begins to skid, it is best for the driver to:

If your trailer begins to skid, you should release the brakes to regain traction. The trailer will begin to straighten out once the wheels begin to grip the road again.

4 . What is a bobtail tractor?

Tractors without semi-trailers are referred to as bobtail tractors. Operating a bobtail tractor requires drivers to exercise caution.

5 . When backing up your tractor while coupling it to a trailer, the trailer brakes should be:

Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. Before backing your tractor under the trailer while coupling, make sure your trailer brakes are locked.

6 . If an air supply control is in its "emergency" position:

Tractor protection controls in older vehicles may be operated by levers instead of knobs. If an air supply control is set in its "emergency" position, the air supply will be stopped and the trailer emergency brakes will be applied.

7 . How much space should be between the upper and lower fifth wheel?

Before a trip, be sure to inspect all couplings. There should be no space between the upper and lower fifth wheel.

Wait, before you go

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