Knowledge Test Class A #2
Class A Driving Test | Nevada 2026 #2 Page 6 of 7
Train for FREE online with our Nevada class A license 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 CDL class A permit in 2026, 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 CDL class A requirements may vary from state to state.
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36 . How can a driver maintain alertness while driving?
Eating heavy foods before driving or keeping the temperature in a cab too high can cause a driver to become drowsy while behind the wheel. Exercising and maintaining a healthy diet will help a driver to stay alert while driving.
37 . For safety purposes, when should you turn off a retarder?
When driving in heavy traffic
Retarders are mechanisms in some vehicles that help slow a vehicle and reduce the need for braking. However, using a retarder may cause wheels to skid when they have poor traction. Turn off retarders when traveling under wet, snowy, or icy conditions.
38 . Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
Before beginning a trip, it is important to check the brake drums during your walk-around inspection. It is unsafe to drive if any brake drum has a crack more than one half of the width of the friction area.
39 . Header boards:
Front-end header boards, also known as "headache racks," protect the driver from cargo moving in the event of a crash or emergency stop.
40 . You should always be able to stop within:
One minute of hitting the brakes.
It is essential that your vehicle will be able to stop within the area of the road that you are able to see. This means that you must slow down whenever conditions reduce visibility.
41 . If traveling across state lines:
A driver should have only one license.
It is prohibited for any person to have more than one driver license. All states share drivers' information in a computer database to help prevent issuance of licenses to drivers who already have them.
42 . Using a helper when backing is:
Usually a cause of problems.
