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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.
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.
How do you correct a drive-wheel acceleration skid?
3.
Which of these is NOT a good thing to do when driving on slippery roads?
4.
What is the proper way to hold a steering wheel?
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.
Which of the following systems should receive extra attention during winter weather inspection?
7.
At what time does a violation occur on this log?
8.
What is the maximum blood-alcohol concentration allowed for operating a school bus?
9.
On what day and time does an 11 hour rule violation occur?
Day 1

Day 2
10.
All of the following are exempt from needing a CDL except:
11.
What violations occurred on Day 2 of this example?
Day 1

Day 2
12.
Service brake stopping action should be tested at:
13.
All of the following are lighting requirements for combination vehicles longer than 20 feet or wider than 80 inches except:
14.
All of the following apply to farm vehicle operator CDL exemption except:
15.
Any operator who refuses to submit to drug or alcohol testing, or who tests in excess of the legal limits, will be disqualified for a minimum of:
16.
You must keep the papers about hauling hazardous materials:
17.
You are driving a truck with a manual transmission. What gear will you probably have to use to take a long, steep downhill grade?
18.
Which of these statements about downshifting is true?
19.
To secure paper rolls with eyes horizontally against rearward movement, you can use which of the following except:
20.
Which violations have occurred in the below example?
Day 1

Day 2
21.
Drivers who have trouble sleeping at night, fall asleep at odd times, or snore loudly, gasp, and choke in their sleep should:
22.
You are checking your wheels and rims for a pre-trip inspection. Which of these statements is true?
23.
Which of these statements about cargo loading is true?
24.
Which of these is true about tire pressure?
25.
When confronted with an aggressive driver, you should do all of the following except:
26.
If you need to leave the road in a traffic emergency, you should:
27.
If you are forced to leave the road in an emergency, all of these are good guidelines except:
28.
When you are starting to move up a hill from a stop:
29.
Where should the ignition key be during the pre-trip inspection?
30.
Your log must include all of the following except:
31.
If you slide the 5th wheel toward the nose of the tractor, what will be the effect?
32.
A tractor trailer traveling 55 mph will travel how far between when the brain perceives a hazard and stopping?
33.
What is a pallet used for?
34.
A 'hook-lift container' is:
35.
To correct a drive wheel braking skid, you should:
36.
Specific parts of the CDL driving and skills exam include which of the following?
37.
Working Load Limit (WLL)is defined as:
38.
Which of these statements about vehicle fire is true?
39.
Some causes of fuel fires include improper fueling, driver smoking, and:
40.
You should stop driving:
41.
A sign of a confused driver who may present a potential hazard is:
42.
When securing a single metal coil with eyes vertical:
43.
When starting down a hill, instead of using the foot brakes to control speed:
44.
As part of their pre-trip cargo securement inspection, drivers should:
45.
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?
46.
In the following picture, what are axles 4 and 5 commonly referred to as?

47.
What is Gross Vehicle Weight Rating?
48.
Improperly loaded or secured cargo:
49.
When driving downhill, you should use the service brakes:
50.
Submitting fingerprints for a background check will be required for drivers applying for:
Colorado Passenger Vehicles TestColorado Pre-Trip TestColorado General Knowledge TestColorado School Bus TestColorado Tanker Vehicles TestColorado Hazmat TestColorado Doubles/ Triples Trailers TestColorado Air Brake TestColorado Combination Vehicles Test