california
CDL Practice Test

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This site is designed to help aspiring commercial drivers practice for their State of California Department of Motor Vehicles CDL test. You can take these free California CDL practice tests as many times as you would like. Questions on these tests come from the various commercial driver license topics that are represented in the California CDL handbook. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin.

1 / 40

A driver that hauls hazardous materials must attend training every:

2 / 40

The most dangerous time during the school bus ride is:

3 / 40

This item does not need to be checked during the cab check.

4 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

5 / 40

What action should you take if there is no phone available and you discover your hazardous materials shipment leaking at a rest stop?

6 / 40

Which of the following would NOT be part of a standard vehicle inspection?

7 / 40

You do not have to stop at railroad crossings, but must slow down and carefully check for other vehicles:

8 / 40

Most states require school bus drivers to take a physical examination:

9 / 40

What is the brake system that applies and releases the brakes when the brake pedal is used?

10 / 40

This component should be checked that it is solid, securely bolted to the tracture frame, and clear of objects.

11 / 40

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

12 / 40

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

13 / 40

What does outage mean?

14 / 40

If your bus is equipped with an emergency exit door, it must:

15 / 40

When you discharge an unruly passenger, you must choose a place that is:

16 / 40

Bus drivers must have a commercial driver license if they drive a vehicle designed to seat more than:

17 / 40

The gauge that indicates normal or increasing lubrication pressure to prevent engine seizure, failure or breakdown is:

18 / 40

What should you hear when you have the hand valve on and are testing the trailer brakes by opening the service air line at the back of the trailer?

19 / 40

What should the driver pay special attention to when driving smaller tanks?

20 / 40

You should____when an emergency requires you to quickly stop due to a crash.

21 / 40

What is incorrect concerning disruptive passengers?

22 / 40

Is this statement true or false: You do not need to use the parking brake if are leaving your vehicle for a short amount of time.

23 / 40

While driving on a clear night with low beam headlights, you should be able to stop within:

24 / 40

What must vehicles with air brakes have?

25 / 40

How do you hook a combination to a second trailer without spring brakes and without using wheel chocks?

26 / 40

An example of a low pressure warning signal for air brakes is:

27 / 40

When there is a hazardous materials emergency. You should:

28 / 40

Which of the following is NOT something you need to know in order to determine if you need to use placards?

29 / 40

The belt that you need to make sure is securely mounted, without frays, and adjusts and latches properly is the:

30 / 40

Select how brakes work on long, steep downgrades:

31 / 40

How often should you check the tires on a placarded trailer that has dual tires?

32 / 40

Select how you would check the truck's slack adjusters.

33 / 40

When should the trailer hand valve be used?

34 / 40

In what position should shut off valves on the rear of the last trailer be in on a set of double trailers?

35 / 40

Select which is not an engine compartement belt:

36 / 40

One reason hauling liquids in tank vehciles require special care is:

37 / 40

Select the statement that is true in regards to quick steering movements and triple/double trailers:

38 / 40

A driver of a tanker should use an escape ramp when _____.

39 / 40

How often should you check the cargo you are transporting?

40 / 40

What does it mean when the safety valve releases air?

Your score is

The average score is 65%

5/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A california Commercial Drivers License

Residents of California may apply for their CDL at the age of 18 years old. These residents may only drive within the California state borders and are not eligible for driving hazmat vehicles. Residents over the age of 21 are eligible for interstate commerce and may receive their Hazmat Certification. All residents must undergo a medical examination by an approved Medical Examiner. The examiner will provide the individual with a Medical Examiner’s Certificate that will show their physical ability to be eligible to operate a commercial vehicle.

Any drivers who falls into the following categories are disqualified from receiving their commercial driver’s license.

  • Convicted of driving a commercial vehicle impaired in the past two years.
  • Having multiple driver’s license.
  • Having a revoked, denied, canceled, or suspended driver’s license.
  • Being disqualified from obtaining CDL driving privileges in another state.

Applicants for a California CDL must complete a vision test at the time of their application, along with one or more knowledge tests and a practical skills test.

Endorsements
S – School Bus
N – Tank
P – Passenger
H – Hazardous Materials
X – Hazmat and Tank Combination
P – Passenger Vehicle

Hit the Open Road

California CDL License Test Tips

Knowledge tests are required to be passed by all California residents seeking a commercial driver’s license. Class A applicants are required to complete a 70 question assessment regarding both general commercial driving knowledge and combination driving. Class B and C applicants are required to pass a 50 question assessment about general commercial driving knowledge. Those seeking endorsements or the removal of the Air Brake restriction will have to take additional knowledge tests. Each endorsement has a 20 to 30 question assessment based on the topic of the endorsement. All knowledge tests must be passed for the resident to receive their CDL. A passing score is receiving an 80 percent or higher on the assessment. Each applicant is responsible for showcasing their ability to operate a commercial vehicle as part of the CDL skills test. There are three main parts to this test which include the on-road test, pre-trip inspection, and basic control skills test. Applicants must pass all three parts to receive their commercial driver’s license.

Additional Information

Information on the California Department of Motor Vehicles

The State of California Department of Motor Vehicles regulates the certifying and testing of commercial drivers in the California. To get more information contact them via:

Website:  https://www.dmv.ca.gov/portal/dmv/detail/commercial/commercial

Phone:  800.777.0133

 

Additional California CDL Helpful Links

Please use the links below to access more valuable California CDL testing resources and to learn more about practice driving tests for the state of California.