Idaho DMV CDL General Knowledge Quick Practice Test 1

Idaho DMV CDL General Knowledge Quick Practice Test 1 For 2024

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. On a wet road, you should reduce your speed:

By about one-half.
By about one-third.
By about one-quarter.
By about one-eighth.

2. You should specifically look out for black ice:

When it is snowing.
When the temperature is below freezing and the road looks wet.
When the temperature is above freezing and there is snow on the ground.

3. When checking the air and electrical lines during a vehicle inspection, all of the following should be true, except:

The air hoses are making a hissing noise.
The air hoses and electrical lines are not cut.
The air lines are not pinched.
The air lines are not dragging against tractor parts.

4. Passive railroad crossings:

Are controlled by flashing lights.
Are not controlled by any type of traffic control device.
Have gates that lower when trains are approaching.
Should never be crossed by a CMV.

5. If a load is 10 feet long, it should be secured by at least ____ tie-down(s).

One
Two
Three
Four

6. An open automobile window in cold weather may indicate that the driver is:

Driving impaired.
Inappropriately dressed.
Using the heat inside their vehicle.
Enjoying the fresh air.

7. A truck may need to be under the legal maximum weight limit when being driven:

On a flat road.
On a mountainous road.
In heavy traffic.
At night.

8. Air tank drains should:

Not be used by the driver.
Only be used when it is wet outside.
Be used to drain the tanks completely.

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