Home
Study Plan
Get Pro
Review

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.
Turn signals facing the front should be amber or:
2.
In case of low friction between the cargo and deck, which of these is not a solution?
3.
Define 'bolster':
4.
Which of these pieces of emergency equipment should always be carried in your vehicle?
5.
You are driving in an area with few streetlights, if you cannot see well with your headlights, which of the actions may help:
6.
When the hydraulic brakes fail while you are driving, the system will not build up pressure and the brake pedal will feel spongy or go to the floor. What should you do?
7.
Securing cargo on a flatbed trailer is typically done using:
8.
When making a left turn, you should do which of the following?
9.
A hook-lift container is:
10.
When securing an intermodal container on a chassis, what is the maximum allowable vertical travel when secured?
11.
What does the 14 hour on duty limit mean?
12.
The maximum safe weight that a tire can carry is:
13.
When a coolant container is part of a pressurized system which of these is true?
14.
How current must your logbook be?
15.
A single metal coil with eye vertical weighing 6,350 lbs requires tiedowns with a minimum aggregate WLL of:
16.
To secure a cubic-shaped boulder, how many tiedowns are required, at minimum?
17.
Service brake stopping action should be tested at:
18.
Why is damage to the exhaust system a danger?
19.
Which of these are requirements for securement systems?
20.
The Aggregate Working Load Limit should, at minimum, be:
21.
When is it acceptable to use amphetamines to help you stay awake while driving?
22.
Why should drivers avoid foreign objects in the road?
23.
You should signal continuously while turning because:
24.
It is accepted that friction mats provide a resistance to horizontal movement equal to:
25.
Which of these statements about double clutching and shifting is true?
26.
There are two types of jackknife, they are:
27.
A school bus endorsement is required in order to transport:
28.
The engine brake effect is greater when the engine is _____ governed RPM and the transmission is on a _____ gear.
29.
Controlled braking is:
30.
Communication means:
31.
If you increase your speed from 20 to 60 mph (original speed times 3), how much more braking distance is required at 60 mph than at 20 mph?
32.
After starting the engine:
33.
When going down a long steep downgrade you should always:
34.
Which of the following are covered by the specific log securement requirements?
35.
When backing, all of the following are important safety rules:
36.
Which of these is NOT a danger of a rough acceleration?
37.
Stab braking should not be used on vehicles with:
38.
If you were instructed to 'tarp' a load, what would you be using?
39.
Low-beam headlights generally light to a distance of:
40.
Sharp pavement drop-offs:
41.
What is the maximum ideal angle for an effective direct tiedown?
42.
You weigh the truck immediately before and after fueling. Based on the following, determine what percentage of the weight goes to each set of axles.

Before fueling:

steer: 11,450, drives: 33,100, gross: 76,700

After fueling:

steer:11,850, drives: 33,300, gross: 77,300

43.
Heavy vehicles often move slower than others. Which of these is NOT a good rule to follow while driving a heavy vehicle?
44.
On what day and time does an 11 hour rule violation occur?
Day 1

Day 2

45.
You receive a scale ticket and your drive axles are 35,400 and your trailer tandems are 31,100. 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?
46.
There will be times when you must take a minimum of a 30 minute break off duty before performing which of the following tasks?
47.
CDL drivers from New York State require the Metal Coils Endorsement when transporting metals coils weighing:
48.
Improperly loaded or secured cargo:
49.
If traveling slower than traffic flow on a grade, if legal you should:
50.
How many days worth of logbook entries must you have available to show during an inspection?
California Air Brake TestCalifornia Tanker Vehicles TestCalifornia General Knowledge TestCalifornia School Bus TestCalifornia Doubles/ Triples Trailers TestCalifornia Pre-Trip TestCalifornia Hazmat TestCalifornia Passenger Vehicles TestCalifornia Combination Vehicles Test