This free CDL general knowledge 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.

General Knowledges Test 03

1 / 30

When heading onto an off-ramp or on-ramp, you should cut your speed...?

2 / 30

You are more likely to hit a roadside object such as a sign or tree limb if you drive...?

3 / 30

In some states and areas, the speed limit for trucks and buses is up to how much lower than that for cars on the same road?

4 / 30

The risk of crashes is doubled if a driver is distracted for just...?

5 / 30

On a wet road, you should reduce your speed by...?

6 / 30

When faced with an aggressive driver, you should...?

7 / 30

Hydroplaning can occur at speeds as low as...?

8 / 30

When carrying a heavy load, you should be particularly wary of getting stuck on...?

9 / 30

You must not drive at night at a speed which means you can't stop within the distance you can see in your headlights. With full beam headlights, that will be a maximum distance of...?

10 / 30

A heavy vehicle will need the longest stopping distance when it is...?

11 / 30

Which of these areas is likely to freeze first when the temperature is close to 32°F?

12 / 30

At 80 mph, the force of your impact if you strike a person or vehicle will be how much greater than if you were traveling at 20 mph?

13 / 30

When you are driving a 60 foot truck at speeds over 40 mph, you should allow following distance of...?

14 / 30

Which of these is the only reliable way to get rid of fatigue?

15 / 30

Which of these activities can distract you from your driving?

16 / 30

You should be especially wary of tourists, as they can be confused as to direction. A good clue to a tourist is...?

17 / 30

If someone is coming towards you at night with very bright lights on, you should look...?

18 / 30

Tests have shown that trucks with a high center of gravity can roll over on curves when traveling...?

19 / 30

You see a pedestrian about to cross the road looking straight to your vehicle. You should assume...?

20 / 30

Looking out for hazards and planning what to do should they turn into emergencies is what is called driving...?

21 / 30

At which of these points in a rainstorm will the road be most slippery?

22 / 30

If another vehicle is tailgating you, what should you do to reduce the chances of the crash?

23 / 30

The principal way you should control your speed on downgrades is to...?

24 / 30

Which of these factors can influence whether or not you are able to make the posted clearance on a bridge or underpass?

25 / 30

At speeds below 40 mph, you should allow a second of space ahead for every...?

26 / 30

When coming up on another vehicle or approaching one coming in the opposite direction at night, you should dip your lights before they get within...?

27 / 30

The safest way to avoid becoming distracted by a cell phone is...?

28 / 30

If you have to swing out to make a right-hand turn, you should do so by taking up...?

29 / 30

If you triple your speed from 20 to 60 miles an hour, you increase your braking distance by...?

30 / 30

Which of these types of music is recommended to help you be a less aggressive driver?

Your score is


Who is Eligible to Receive A CDL?

Now that you know the requirements that you will need in order to get a CDL, let’s learn more about the eligibility to get one. This will better help you determine if getting a CDL is possible for you.

• You must be 18 years of age to obtain a CDL for in-state driving. If your job requires you to drive out of state, you must be at least 21. Additionally, if you are going to haul hazardous materials, you will also need to be 21.
• You must have no prior criminal convictions that may disqualify you such as certain felonies.

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.