CDL General Knowledge Practice Test #1

This is a timed quiz. You will be given 45 seconds per question. Are you ready?

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What is the most important reason for doing a vehicle inspection?

Correct! Wrong!

safety for yourself and other road users. Although A, C, and D are valid reasons, the primary goal of a vehicle inspection is to insure safety.

When backing your vehicle, which of the following is NOT recommended

Correct! Wrong!

Back towards the right side. When backing your vehicle you should always back and turn towards the driver's side, even if it means going around the block to put your vehicle in the right position. Backing towards the right side is very dangerous because you can not see well.

It is important for driving safety to always be looking ahead. Which of the following is NOT a recommended time/distance that you should be looking ahead?

Correct! Wrong!

About 5 car lengths. It is important to look ahead about 12-15 seconds to insure you have adequate time to stop or change lanes if necessary. 12 to 15 seconds is equivalent to about one city block or 1/4 mile on the open highway. Looking ahead 5 car lengths (about 70 feet) will not give you adequate time to react.

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

Correct! Wrong!

4 seconds. To calculate your space required, use the following formula: If going under 40 MPH, use 1 second for each 10' of vehicle length. If going over 40 MPH, use the same formula but add 1 second. In this scenario, a 40' truck requires 4 seconds, and you don't need to add an additional second, because you are traveling under 40 mph.

The act of operating a motor vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others is known as?

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Aggressive driving. An aggressive driver is only concerned with their driving and not others on the road. Road rage differs from aggressive driving because with Road Rage, the driver shows intent to harm others.

You should check your tires every ____ or every ____ when driving in very hot weather.

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2 hours, 100 miles. Hotter temperatures increase air pressure. If you check your tires and they are too hot to touch, you should remain stopped until they cool off. Overheated tires may blow out or catch fire.

Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?

Correct! Wrong!

Time of day. To determine your safe speed when going down a long steep downgrade, you need to consider the length and steepness of the grade, the weather, the total weight of the vehicle and cargo, as well as the road conditions.

With the controlled braking method, you _____?

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Apply the brakes as hard as you can without locking the wheels. In addition, you should keep your steering movements very small while using a "controlled braking" method.

Which of the following is NOT a basic step to be taken at a crash scene?

Correct! Wrong!

Gather the contact information of all the drivers involved. If you are involved in a crash and are not seriously hurt, your first priority is to take steps to prevent further damage and injury. These steps include protecting the area, notifying authorities, and caring for the injured. Gathering contact information is not a priority.

Which contains more alcohol: a 12-ounce glass of 5% beer, a 5-ounce glass of 12% wine or a 1 1/2-ounce shot of 80 proof liquor.

Correct! Wrong!

They all contain the same amount of alcohol. Each of these drink amounts contain the same amount of alcohol.

Vehicle handling can become unsafe if the weight is not properly balanced. Hard steering can be caused by

Correct! Wrong!

Too much weight on the steering axles. Too much weight on the steering axles can cause hard steering, which can damage the steering axle and tires. Too little weight on the driving axles can cause poor traction. Under loaded front axles can make the steering axle too light to steer safely. A high center of gravity may cause the vehicle to tip over.

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