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

The compressor is connected to the engine via _____?

2 / 40

For emergency braking to avoid a crash when driving a double trailer you should:

3 / 40

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.

4 / 40

As the driver of a bus, how can you best avoid hindering other traffic on the highway?

5 / 40

In what position should the converter dolly air tank drain valve be in for double trailer combination?

6 / 40

What is the best way to stop all skids?

7 / 40

The two other places where the hazardous identification number must appear are:

8 / 40

When this item is missing or loose, movement may occur between the fifth wheel assembly and the frame.

9 / 40

After coupling with a trailer, what position should the front trailer supports be in before driving away?

10 / 40

How do you test your service brakes?

11 / 40

Select the true statement in regards to an application pressure gauge:

12 / 40

Which of these is a good rule for backing a straight bus?

13 / 40

When conducting a pre-trip inspection, the most important item to verify is _____.

14 / 40

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

15 / 40

In column 1, the "D" symbol means:

16 / 40

Select the action that is not appropriate when driving on slippery roads:

17 / 40

The transport index of a radioactive material:

18 / 40

Which of the following should you do when driving the school bus in high wind?

19 / 40

If hazardous material is spilling from your vehicle, do not move your vehicle:

20 / 40

The longest crack that brake or disc drums can have is:

21 / 40

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

22 / 40

Select the first action to do when the low air pressure warning comes on:

23 / 40

What do you need to do to supply air to the air tanks of the second trailer?

24 / 40

This object should be free of shiny treads, rust, free of cracks and distortions.

25 / 40

Select the part that is not a part of the drum brake:

26 / 40

What are the 3 methods for securing a second trailer before coupling?

27 / 40

What color are all school buses painted?

28 / 40

Select which is not a mandatory emergency equipment:

29 / 40

Which of the following is a recommended procedure when unloading the students?

30 / 40

Drivers who transport route controlled radioactive materials must carry a dated certificate of radioactive materials training. This training must have ocurred within the last:

31 / 40

Select the statement of what you should not do if you are required to drive through flowing water or deep puddles.

32 / 40

When you have a major leak in the service line and you apply pressure to the brakes, the service air pressure will escape and:

33 / 40

You are inspecting the_____when looking for broken welds, cracks, holes, or other damage to the longitudinal frame member, cross members, box, and floor.

34 / 40

What are the three types of emergency equipment that you must have with your vehicle?

35 / 40

Select the true statement in regards to driving a truck with triple or double trailers:

36 / 40

You should_____when an emergency requires you to quickly stop your tanker.

37 / 40

Select the true statement in regards to the braking power of spring brakes.

38 / 40

Select which vehicles are required to have a low air pressure warning signal:

39 / 40

What position should the tractor protection control valve be in after coupling?

40 / 40

Select the accurate statement in regards to rolling up the landing gear to complete the coupling process.

Your score is

The average score is 60%

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.