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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.
When using the brakes on a steep downgrade, which of the following applies?
2.
The most important thing you can do when dealing with an aggressive driver is:
3.
Which of these is not part of the pre-trip inspection of the engine compartment?
4.
Which of these statements about managing space to the sides is true?
5.
What violation has occurred on the below log?

6.
If you are stopped at a roadside rest area and found to have a BAC (Blood Alcohol Concentration) of 0.02 you will:
7.
What is the best way to prevent brake failure on long downgrades?
8.
Why is it important to shift gears correctly?
9.
What is the aggregate WLL of two indirect tiedowns with a WLL of 5,000 lbs, and one tiedown with a WLL of 6,000 lbs?
10.
How many days are you required to keep your completed logs?
11.
As the blood alcohol concentration (BAC) goes up, what happens?
12.
When you change your duty status, you must document all of the following EXCEPT:
13.
Overloading can have all of the following effects EXCEPT:
14.
Concrete pipe loaded crosswise generally:
15.
Which of these is true about hazardous materials:
16.
Vehicles exempt from Certificate of Safety inspection requirements include:
17.
In cargo securement, a 'well' is defined as:
18.
If your vehicle catches fire while you are driving, you should:
19.
When securing metal coils with eyes vertical, the angle between tiedown and deck, if possible, should be:
20.
The principal way of controlling speed on downgrades is:
21.
Based on the following figures, how much fuel can you legally add while remaining legal on the steer axle?

Load rating of steer tires: 6,150 pounds

Percentage of fuel weight to steer axle: 80%

Steer axle weight limit in states you're travelling: 20,000 pounds

Weight Before Fueling: Steer: 11,450, drives: 33,100, gross: 76,700

22.
Which means of securement is prohibited when transporting coils with
the coil eye crosswise on the vehicle?
23.
The maximum number of "looks" allowed during the driving exam is:
24.
What is the maximum allowable weight on a 5-axle combination vehicle?
25.
In bad weather many drivers tailgate large vehicles. What should you do?
26.
All of the following should be part of the engine compartment check, EXCEPT:
27.
What is the safe number to use in calculations for the weight of fuel?
28.
Backing into a space that is to the right rear of your vehicle is referred to as:
29.
Using the following numbers for your calculations, how much weight will come off your steer axle?

Miles per gallon: 7

Miles travelled: 280

Percenatage of fuel weight on steer axle: 80%
30.
Using controlled braking, brakes are applied as hard as possible:
31.
Rust around wheel nuts may indicate what?
32.
Which violations have occurred in the below example?
Day 1

Day 2
33.
What violation has occurred at 10:00 a.m. on Day 2?
Day 1

Day 2
34.
In a pressurized cooling system, coolant level should be checked:
35.
Aggregate Working Load Limit is defined as:
36.
Gross Vehicle Weight Rating (GVWR) means the following?
37.
Drivers must have a CDL to legally drive:
38.
Controlled braking:
39.
Mirror adjustment can only be checked accurately when:
40.
You are required to inspect your truck within how many miles after beginning the trip?
41.
To help stay alert while driving, when should you take breaks?
42.
What is the best way to determine what percentage of the weight of fuel will go to each set of axles?
43.
What does emergency braking mean?
44.
What violation occurs at 2:00 p.m. on this example?
45.
When securing building materials, how many tiedowns are required for top tier bundles longer than 5 ft?
46.
If you lose pressure in hydraulic brakes, you can:
47.
When securing a paper roll with a width that is more than twice its diameter, which of the following is not an acceptable method of securement to prevent tipping?
48.
The definition for "shortwood" identifies pieces that are no longer than:
49.
Your trailer has a 6 inch hole spacing in the tandem slider rail and your trailer tandems are 900 pounds overweight. What is the minimum number of holes you will have to slide the tandems to get the tandems within legal limits?
50.
Which of these is NOT a good rule to follow when caring for injured persons at an accident scene?
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