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Free Colorado CDL General Knowledge Practice Test 2023

You are looking for an actual Colorado CDL practice test for your coming CDL test? So you have come to the right place. Our CO General Knowledge Practice Test has the same questions as the real exam which is based on the Colorado CDL manual. Our test covers most of the subject areas on the Colorado 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 practice test an unlimited number of times to make sure you learn all the questions. Our CDL practice test will refine your driving knowledge so you can earn your CDL and start driving on the roads. Let’s get ready to take our practice test now!

Our CDL practice tests:
Based on 2021 CO commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
CO CDL General Knowledge Test format:
50 questions
40 correct answers to pass
80% passing score
Study now
List of questions
1.
What are the Federal standards for the gross vehicle weight of a 5 axle commercial vehicle?
2.
When is it necessary to learn how a fire extinguisher works?
3.
Which of these statements about driving in areas with strong wind is true?
4.
The purpose of the retarders is to:
5.
When can your logbook be inspected?
6.
Special permits will be required for loads that are:
7.
The cargo securement standard applies to commercial vehicles weighing more than:
8.
"The driver’s manual suggests several things to do when you pass a vehicle. Which of these is NOT one of them?"
9.
What does the 14 hour on duty limit mean?
10.
When driving in very hot weather, it is critically important to carefully inspect:
11.
Instead of stopping in an emergency, what is many times the safer action?
12.
All of the following are requirements for transporting coils with eyes crosswise, EXCEPT:
13.
On which of the below logs did a violation occur?

Day 1



Day 2

14.
If you jam on the brakes and the wheels lock up and skid:
15.
In case of which fires can you use water to put it out?
16.
You're loaded heavy with 1/2 tank of fuel onboard. Using the following numbers, where should you move the 5th wheel to get it setup properly?


steer axle: 12,300 pounds

drive axles: 33,100 pounds

Weight transfer: 500 pounds per hole
17.
Most serious skids result from:
18.
What is the maximum allowable weight on a 5-axle combination vehicle?
19.
You should wear a seat belt in a moving vehicle:
20.
You receive a scale ticket and your drive axles are 31,700 and your trailer tandems are 35,100. Based upon a trailer with 6 inch slider rail hole spacings, what is the minimum number of holes you would have to slide the tandems to get the weight legal, and what would the final weights be?
21.
When securing paper rolls on a flatbed or curtainside vehicle, it is acceptable to stack rolls with eyes vertical:
22.
Your brakes can get wet when driving through heavy rain. What can happen if the brakes are applied?
23.
Most skids:
24.
You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blew out of your vehicle, what should you do first?
25.
Which of these actions are NOT recommended for a left turn?
26.
What happens if an EOBR malfunctions?
27.
Communication means:
28.
Which of the following is not a requirement of wood used as blocking or bracing?
29.
An anchor point is defined as:
30.
What is the only acceptable cure for driver fatigue?
31.
What is the minimum aggregate WLL of all tiedowns in a group of concrete pipe?
32.
After turning and getting up to speed:
33.
All of the following are classified as "a drink" and contain the same amount of alcohol except:
34.
"Brake fade" is:
35.
Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true?
36.
You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should:
37.
During the Stop/Start maneuver, when stopped, your vehicle:
38.
What hours must your logbook show?
39.
To help stay alert while driving, when should you take breaks?
40.
Which of the following is NOT a characteristic of tire failure?
41.
To adjust driving space to slippery conditions, all of the following are space considerations EXCEPT:
42.
What is the minimum nominal dimension of timber blocking used to secure concrete pipe?
43.
A good inspection habit is for the driver to re-inspect the cargo:
44.
What is bell pipe concrete?
45.
Which statement below is false?
46.
Which of the statements about an inspection of the suspension components is true?
47.
Where will the weight of fuel be distributed?
48.
There will be times when you must take a minimum of a 30 minute break off duty before performing which of the following tasks?
49.
In terms of cargo securement, what is a 'well'?
50.
Shifting gears on most heavy vehicles using manual transmissions will require:
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