This general knowledge CDL test will examine your knowledge of general trucking, safe transportation of cargo, safe driving, and the correct way to perform a pre-trip vehicle inspection. In order to receive your CDL, it is required that you pass the state’s official CDL General Knowledge exam.
Placards warning of hazardous materials must be diamond shaped and at least what size on each edge?

Question 1 of 30

Which of these will lessen the effect of alcohol on your driving?

Question 2 of 30

Which of these driving errors is likely from a driver who has been drinking?

Question 3 of 30

Many heavy vehicle crashes occur between what hours?

Question 4 of 30

Why is it vital to have all hazardous materials properly labeled?

Question 5 of 30

When you are carrying hazardous materials, a placard warning of this must be placed on...?

Question 6 of 30

To avoid fires, you should check all components of your truck for excessive heat...?

Question 7 of 30

Who is responsible for making sure that your cargo is well-balanced and safe on the road?

Question 8 of 30

Which of these drinks contains the most alcohol?

Question 9 of 30

You are hauling a hazardous material cargo and you stop to eat. What should you do with the shipping papers relating to your cargo?

Question 10 of 30

You can increase your energy levels for driving by...?

Question 11 of 30

Overloading a truck will have negative effects on...?

Question 12 of 30

Which of these is most dangerous in terms of driving impairment?

Question 13 of 30

If somebody is bleeding heavily, you should try to staunch it using...?

Question 14 of 30

Which of these types of fire should not be tackled with just water?

Question 15 of 30

You can often drop asleep if you are tired for four seconds without realising. At 55 miles an hour, what distance will you cover whilst asleep?

Question 16 of 30

As soon as you start to feel sleepy, you should...?

Question 17 of 30

The aggregate working load limit of any securement system used on cargo must exceed the weight of the article or articles it is securing by...?

Question 18 of 30

The Gross Vehicle Weight (GVW) is...?

Question 19 of 30

The heaviest elements of your cargo should go...?

Question 20 of 30

No matter how small a cargo load, it must have at least how many tiedowns securing it?

Question 21 of 30

Which of these is the only thing which can sober a person who has been drinking up?

Question 22 of 30

Which of these people will not have their driving affected by three drinks of alcohol?

Question 23 of 30

A fire extinguisher jet should be aimed...?

Question 24 of 30

Your liver processes alcohol at a rate of how many standard drinks per hour?

Question 25 of 30

Cargo loaded on a flatbed must have at least one tiedown for every...?

Question 26 of 30

When using a fire extinguisher, you should attempt to be...?

Question 27 of 30

You see in your mirrors that part of your trailer is on fire. The best place to stop and fight it is...?

Question 28 of 30

How many deaths in the USA per year are caused by traffic accidents involving persons who have been drinking alcohol?

Question 29 of 30

In which of these circumstances may the legal weight of cargo for your vehicle be unsafe to carry?

Question 30 of 30



Steps to Get A CDL

  • Fill out an application: You can obtain a CDL application at any local DMV location. Fill out the application and bring it back to the DMV. When you turn in your application, be prepared to pay any fees. These fees will vary depending on the state in which you live.
  • Obtain your commercial learner’s permit. Try our general knowledge CDL test here.
  • Take the final exam: After 14 days behind the wheel, you will be then required to take the road test. When you arrive at your local DMV, you will be given this test, and if you pass, then you will be issued your CDL license.

There are three types of CDL classes that determine the type of vehicle you may drive and how much you may tow. A Class A CDL class allows you to operate a vehicle with a GCWR of 26,001 if the vehicle you tow weighs more than 10,000 and a Class B CDL allows you to operate a vehicle with a GVWR of 26,001 or more pounds or operate any vehicle towing another vehicle that weighs less than 10,000 GVWR. With a Class C CDL, you can operate a Class C vehicle that transports hazardous materials.