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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.
The most important thing you can do when dealing with an aggressive driver is:
2.
Which of these statements about managing space to the sides is true?
3.
Define 'bolster':
4.
What violation occurs on the below example?

Day 1



Day 2

5.
What should you do before driving in mountains?
6.
The BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:
7.
Placing a phone call while driving:
8.
How many days are you required to keep your completed logs?
9.
As the blood alcohol concentration (BAC) goes up, what happens?
10.
Is there a 14 hour rule violation on Day 2?
Day 1

Day 2
11.
Retreaded, recapped, or regrooved tires are allowed on the front wheels of a bus when?
12.
You are driving a vehicle that could be driven safely at 55 mph on an open road. But traffic is heavy and other vehicles drive at the speed of 35 mph, though the speed limit is 55 mph. The safest speed for your vehicle is more likely to be:
13.
In cargo securement, what is a 'cleat' defined as?
14.
When a coolant container is part of a pressurized system which of these is true?
15.
A stake pocket is:
16.
When loaded cement pipe over 45 inches in diameter, which pipes should be blocked, wedged, or otherwise immobilized?
17.
What is the minimum amount of rearward force that a cargo securement system must withstand?
18.
To prevent brake fade you should:
19.
When you are driving on a snow packed road, you should reduce your speed by:
20.
A container chassis vehicle is defined as:
21.
When securing concrete pipe with a diameter of more than 45 inches loaded crosswise, how many tiedowns are required through each pipe at minimum?
22.
As part of the log packing requirements:
23.
Which of these statements about double clutching and shifting is true?
24.
What affect will sliding the trailer tandems forward have on the weight distribution?
25.
How long should it take oil pressure to come up to normal?
26.
When loading bell pipe on one tier, all of the following apply, EXCEPT:
27.
Good general shifting techniques for going down a long downgrade include:
28.
What violation has occurred at 10:00 a.m. on Day 2?
Day 1

Day 2
29.
When exiting or entering on a curved freeway ramp, you should:
30.
When turning quickly in an emergency, which of the following applies:
31.
When calculating directional forces, 'g' is expressed as:
32.
Some large trucks have curved mirrors. These mirrors:
33.
An outside vehicle observation will be scored every time the driver:
34.
When vehicles towing trailers go into a drive-wheel skid, the trailer can push the towing vehicle sideways, causing a:
35.
Specific examples of vehicles which drivers should pay close attention to as possible hazards include:
36.
Containerized loads:
37.
What is the best way to determine what percentage of the weight of fuel will go to each set of axles?
38.
When you are parked on the side of the road at night you must:
39.
Which of the following techniques will not change the weight distribution across your axles?
40.
If you have used up all of your 14 hour on duty time, how many hours would you regain after an 8 hour break in the sleeper berth?
41.
If you were instructed to 'tarp' a load, what would you be using?
42.
Which of these statements about acceleration is true?
43.
HOS regulations were designed to do all of the following, except:
44.
Specific hazards to watch for when traveling through work zones include:
45.
On what day and time does an 11 hour rule violation occur?
Day 1

Day 2

46.
The definition for "shortwood" identifies pieces that are no longer than:
47.
Which of these is NOT a good rule to follow when caring for injured persons at an accident scene?
48.
What is the minimum WLL of a tiedown used to secure logs?
49.
What is a rub rail?
50.
How many days worth of logbook entries must you have available to show during an inspection?
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