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Free California CDL General Knowledge Practice Test 2023

You are looking for actual practice for your coming CDL test? So you have come to the right place. Our CA General Knowledge Practice Test has the same questions as the real exam which is based on the California CDL Handbook. Our test covers most of the subject areas on the California General Knowledge Test such as shifting techniques, railroad crossing safety, drunk driving laws, and much more to make you become a safer driver. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, don't worry, you can take this California CDL practice test an unlimited number of times to make sure you learn all the questions. Our practice test will refine your driving knowledge so you can earn your CDL and start driving on the roads. Let’s take our CDL practice test now!

Our CDL practice tests:
Based on 2021 CA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
CA CDL General Knowledge Test format:
50 questions
40 correct answers to pass
80% passing score
Study now
List of questions
1.
You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange center. What does the marking mean?
2.
Which of these statements about backing a heavy vehicle is true?
3.
Hydroplaning:
4.
The cargo securement standard applies to commercial vehicles weighing more than:
5.
When using stab braking, all of the following are steps except
6.
After taking 10 consecutive hours off duty, a driver begins to work at 8:00 a.m. The driver may operate a commercial motor vehicle until what time?
7.
When is it a good idea to use drugs to help you stay awake while driving?
8.
You should lightly apply your brakes to flash the brake lights if:
9.
Retreaded, recapped, or regrooved tires are allowed on the front wheels of a bus when?
10.
Making sure that the cargo is not overweight is the responsibility of:
11.
Proper fire prevention should include paying attention to all of these except:
12.
For your safety, when setting out reflective triangles you should:
13.
What does DOT stand for?
14.
What is true about using a heater?
15.
The distance that you should look ahead of your vehicle while driving amounts to about ___ miles at normal highway speed.
16.
A bulkhead is defined as:
17.
Most serious skids result from:
18.
When driving, when is it acceptable to signal other drivers that it is safe to pass?
19.
When securing concrete pipe with a diameter of more than 45 inches loaded crosswise, how many tiedowns are required through each pipe at minimum?
20.
Securing heavy vehicles or equipment with crawler tracks or wheel requires a minimum of how many tiedowns?
21.
A securement system must be capable of resisting how much lateral (side-to-side) force, at minimum?
22.
Banding is:
23.
How many violations have occurred on the below log?
24.
When securing concrete pipe loaded crosswise, arrange the top tier:
25.
What is a reusable, transportable enclosure that is especially designed with integral locking devices that secure it to a container chassis trailer to facilitate the efficient and bulk shipping and transfer of goods by, or between various modes of transport, such as highway, rail, sea, and air.?
26.
What is the minimum securement requirement for paper rolls with eyes vertical with a width between 1.25 and 1.76 its diameter?
27.
In cargo securement, the deck is:
28.
You receive a scale ticket and your drive axles are 32,200 and your trailer tandems are 35,100. Based upon the two most common tandem slider rail hole spacings, what is the minimum number of holes you would have to slide the tandems to get the weight legal, and in which direction?
29.
Passing on the wrong side of the road, passing in a school zone, and driving the wrong way on a one-way street are all specific examples of:
30.
When making a right turn, all of the following are good technical practices except:
31.
Good general shifting techniques for going down a long downgrade include:
32.
A waterproof sheet used to cover cargo is a:
33.
Who must complete a log?
34.
Which of these could be considered off duty time?
35.
Which of these is true about tire pressure?
36.
You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should:
37.
Empty trucks:
38.
Which of these would NOT help if windshield is covered with ice?
39.
When vehicles towing trailers go into a drive-wheel skid, the trailer can push the towing vehicle sideways, causing a:
40.
Merging to the road is safest if you:
41.
To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 mph on the shoulder. How should you move back into the pavement?
42.
Which of these statements about tires and hot weather driving is true?
43.
What is the minimum nominal dimension of timber blocking used to secure concrete pipe?
44.
Water should never be used to put out a gasoline fire, and also what other kind of fire?
45.
If you hear on the radio that there is a major snowstorm forecast along your route, will you qualify for the Adverse Driving Conditions Exception?
46.
Convex (curved) mirrors:
47.
Requirements for securing two stacks of shortwood loaded side-by-side include:
48.
Where will the weight of fuel be distributed?
49.
If you are able to exert 200 pounds of force against an object but you are only exerting 50 pounds of force to do so, what method are you applying to make this happen?
50.
Shifting gears on most heavy vehicles using manual transmissions will require:
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