Knowledge Test Class A #1
Class A Driving Test | Colorado 2025 #1 Page 3 of 7
Train for FREE online with our Colorado class A license test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a CO CDL class A permit in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that CDL class A requirements may vary from state to state.
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15 . What can happen if the air pressure gets too low in an air brake system?
The brakes will be very sensitive.
Pressing and releasing the brake pedal unnecessarily can let air out faster than the compressor can replace it, reducing the available air pressure. If the air pressure in an air brake system gets too low, the brakes will no longer work.
16 . One way to overcome the challenges of blind spots is to:
Avoid using your mirrors.
You should make frequent mirror checks to monitor the traffic around you. This should help you notice if surrounding vehicles begin to move into your blind spots.
17 . Blocking a load:
Can only be done in dry weather.
Cargo should be blocked to prevent it from sliding around in transit. The shifting of weight in transit can make steering and handling difficult for the driver.
18 . A header board is used to:
Prevent the driver from leaving the tractor.
Front-end header boards, also known as "headache racks," protect drivers from moving cargo in the event of a crash or emergency stop.
19 . Federal and state laws require:
Drivers to inspect their vehicles, but only if they will be transporting hazardous materials.
Commercial drivers are required by federal and state laws to inspect their vehicles before every trip. Regular inspections can help drivers identify issues before they become dangerous and costly.
20 . A vehicle equipped with an Anti-Lock Braking System (ABS) can be identified by:
A metal plate on the inside of the driver’s side door.
You can tell that your vehicle is equipped with an Anti-Lock Braking System (ABS) if it has a yellow ABS malfunction lamp on the instrument panel.
21 . When backing a truck, you should:
Only use the mirror on the passenger's side.
To remain aware of hazards behind your vehicle when backing, you should frequently check your mirrors on both sides of the vehicle. Have a helper watch your blind spots whenever possible.
See the exact questions that will be on the 2025 Colorado DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
Cameron tells us how he purchased the CDL exam, and found it to be a useful tool which helped him pass the exam and find a job.
2025 Colorado | Frequently Asked Questions
A CDL Class A license in Colorado is defined as a commercial driver's license that allows the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the GVWR of the vehicle(s) being towed is over 10,000 pounds. This typically includes tractor-trailers and truck and trailer combinations.
A Class A CDL license in Colorado allows you to operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. These are typically vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more where the towed vehicle(s) exceed 10,000 pounds.
To obtain a Class A CDL license in Colorado, applicants must be at least 18 years old (21 for interstate driving), possess a valid driver's license, pass a vision test, and successfully complete knowledge and skills tests. They must also pass a Department of Transportation (DOT) physical examination and provide proof of residency and social security number.
In Colorado, you must be at least 18 years old to qualify for a Class A Commercial Driver's License (CDL) for intrastate driving (within Colorado only). However, to drive a commercial vehicle across state lines (interstate driving), federal regulations require drivers to be at least 21 years old.
Endorsements are not required for a Class A CDL license, but they can provide additional driving privileges. These include H (Hazardous Materials), N (Tank Vehicles), P (Passenger Vehicles), S (School Bus), T (Double/Triple Trailers), and X (Combination of Tank Vehicle and Hazardous Materials). Each endorsement requires additional knowledge tests, and some may require skills tests.
The Class A CDL skills test in Colorado includes three parts: the pre-trip inspection, the basic vehicle control, and the on-road test. You'll need to demonstrate knowledge of your vehicle's components, show you can control your vehicle in various situations, and prove your ability to safely drive in traffic.
Yes, there are limitations. A Class A CDL holder may be restricted from operating certain types of vehicles or transporting certain types of cargo depending on their qualifications, endorsements, and any restrictions listed on their license. Examples include air brake restrictions, manual transmission restrictions, or restrictions related to wearing corrective lenses while driving.
No, according to federal regulations, the written Class A CDL test in Colorado must be taken in English. This is to ensure that all commercial drivers can read and understand traffic signs and signals, directions, and other driving-related documents in English, which is essential for safety on U.S. roads.
Yes, you can request accommodations for the Class A CDL written test if you have a disability. The Colorado DMV is committed to providing equal access to its services. You should contact your local DMV office in advance to discuss your needs and arrange for any necessary accommodations. This might include assistive technology or extra time to complete the test.
If you don't pass the Class A CDL written test in Colorado, you can retake it. However, you must wait until the next day to do so. There's no limit to how many times you can retake the test, but keep in mind, each attempt requires a new fee. It's advisable to study thoroughly before retesting.
