Knowledge Test Class A
This license is required for driving any legal combination of vehicles, with a gross combination weight rating of 26,001 pounds or more, provided the GVWR of a trailer exceeds 10,000 pounds To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has four possible answer choices. Test questions come from the Colorado Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination, Doubles and Hazardous Materials. Endorsements that may be used with a Class A CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
Number of Question
Passing Score
15. The two indicators that determine when you should upshift are:
Explanation
There are two indicators that determine when you need to shift into a higher gear. One indicator is the engine speed (rpm). You should read your vehicle's manual to learn its rpm range and shift up when you reach the top of that range. The other indicator is road speed (mph). You should learn which speeds each gear can accommodate, then keep an eye on the speedometer and shift up as needed.
16. When traveling down a downgrade, the speed of a vehicle will likely:
Explanation
On a downgrade, the force of gravity will cause a vehicle's speed to increase. When approaching a downgrade, choose to travel at a speed that will be safe for the size and weight of your vehicle.
17. To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
Explanation
Some pre-1975 vehicles have a front brake limiting valve, which has "normal" and "slippery" settings. The idea behind these valves was to limit the air pressure available to the front brakes when driving on slippery surfaces, and thereby reduce the danger of a front-wheel skid. Studies have found that this is not actually a concern, so if your vehicle has a front brake limiting valve, leave it in the "normal" position.
18. Test the low pressure warning signal:
Explanation
It is essential that your low pressure warning light function properly. After allowing the system to charge, you can test the warning signal by rapidly applying and releasing the brake pedal. This will release air from the braking system and the warning signal should come on when pressure drops to a dangerous level.
19. In the event of an engine fire, you should not:
Explanation
In the event of an engine fire, you should turn off the engine as soon as possible. Do not open the hood if you can avoid it. Shoot foam through the louvers or from the vehicle’s underside.
20. When only the tractor is equipped with an Anti-Lock Braking System (ABS):
Explanation
If a tractor is equipped with an Anti-Lock Braking System (ABS) but the trailer is not, the risk of jackknifing will be reduced and the driver should still be able to maintain steering control. If only the trailer is equipped with ABS, it is less likely that the trailer will swing out to one side.
21. What is a wig wag?
Explanation
A wig wag is a type of low air pressure warning device in an air brake system. It drops a mechanical arm into the driver's view when the air pressure in the tanks falls below 60 psi.
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Frequently Asked Questions
A Class A CDL (Commercial Driver's License) is a type of license required to operate a combination of vehicles with a total weight of 26,001 pounds or more. This includes any vehicle in combination with a trailer or other vehicles that have a total weight greater than 10,000 pounds. In Colorado, a Class A CDL is necessary for commercial drivers who operate large trucks like tractor-trailers, tanker vehicles, flatbeds, and livestock carriers.
To obtain a Class A CDL in Colorado, you must meet certain requirements, including being at least 18 years old and having a valid Colorado driver's license. You must also pass a written knowledge test and a skills test that includes pre-trip inspection, basic vehicle control, and on-road driving. Additionally, you must pass a medical exam and provide proof of citizenship or legal presence in the United States.
To obtain a Class A CDL in Colorado, you must meet certain requirements, including being at least 18 years old and having a valid Colorado driver's license. You must also pass a written knowledge test and a skills test that includes pre-trip inspection, basic vehicle control, and on-road driving. Additionally, you must pass a medical exam and provide proof of citizenship or legal presence in the United States.
With a Class A CDL license in Colorado, you can operate combination vehicles with a total weight of 26,001 pounds or more. This includes any vehicle in combination with a trailer or other vehicles that have a total weight greater than 10,000 pounds.
Examples of combination vehicles that you can operate with a Class A CDL in Colorado include:
- Tractor-trailers
- Tanker trucks
- Livestock carriers
- Flatbed trucks hauling heavy equipment or machinery
- Double and triple trailers
It's important to note that while you may be licensed to operate these types of vehicles with a Class A CDL, you may need additional endorsements or certifications to transport certain types of cargo, such as hazardous materials or passengers.
Examples of combination vehicles that you can operate with a Class A CDL in Colorado include:
- Tractor-trailers
- Tanker trucks
- Livestock carriers
- Flatbed trucks hauling heavy equipment or machinery
- Double and triple trailers
It's important to note that while you may be licensed to operate these types of vehicles with a Class A CDL, you may need additional endorsements or certifications to transport certain types of cargo, such as hazardous materials or passengers.
To obtain a Class A CDL (Commercial Driver's License) in Colorado, you must meet the following requirements:
1. Age: You must be at least 18 years old to apply for a Class A CDL. However, if you will be transporting hazardous materials or operating across state lines, you must be at least 21 years old.
2. Valid driver's license: You must have a valid Colorado driver's license.
3. Medical certification: You must pass a medical exam and obtain a medical certificate from a licensed medical examiner.
4. Knowledge tests: You must pass the written knowledge tests for the general knowledge and combination vehicle sections of the CDL exam.
5. Skills tests: You must pass a three-part skills test that includes pre-trip inspection, basic vehicle control, and on-road driving.
6. Background check: You will need to provide proof of citizenship or legal presence in the United States and pass a background check.
7. Fees: There are fees associated with obtaining a CDL in Colorado, including application and testing fees.
It's important to note that additional endorsements or certifications may be required depending on the type of cargo you will be transporting or the type of vehicle you will be operating.
1. Age: You must be at least 18 years old to apply for a Class A CDL. However, if you will be transporting hazardous materials or operating across state lines, you must be at least 21 years old.
2. Valid driver's license: You must have a valid Colorado driver's license.
3. Medical certification: You must pass a medical exam and obtain a medical certificate from a licensed medical examiner.
4. Knowledge tests: You must pass the written knowledge tests for the general knowledge and combination vehicle sections of the CDL exam.
5. Skills tests: You must pass a three-part skills test that includes pre-trip inspection, basic vehicle control, and on-road driving.
6. Background check: You will need to provide proof of citizenship or legal presence in the United States and pass a background check.
7. Fees: There are fees associated with obtaining a CDL in Colorado, including application and testing fees.
It's important to note that additional endorsements or certifications may be required depending on the type of cargo you will be transporting or the type of vehicle you will be operating.
In Colorado, you must be at least 18 years old to apply for a Class A CDL (Commercial Driver's License). However, there are some restrictions based on age. Drivers between the ages of 18-20 may only operate commercial vehicles within the state of Colorado and may not transport hazardous materials. If you are between the ages of 18-20 and wish to obtain a Class A CDL, you may need to complete additional training and hold a commercial learner's permit for at least 12 months before being eligible for a full CDL. If you are 21 years or older, there are no restrictions on operating commercial vehicles across state lines or transporting hazardous materials.
Yes, you may need to obtain endorsements depending on the type of cargo you will be transporting or the type of vehicle you will be operating with your Class A CDL (Commercial Driver's License).
The following are the common endorsements for a Class A CDL in Colorado:
1. T - Double/Triple Trailers: This endorsement is required if you will be operating double or triple trailers.
2. P - Passenger: This endorsement is required if you will be transporting passengers, such as a bus or shuttle.
3. N - Tank: This endorsement is required if you will be transporting liquids or gases in tanks.
4. H - Hazardous Materials: This endorsement is required if you will be transporting hazardous materials.
5. X - Combination of Tank Vehicle and Hazardous Materials: This endorsement is required if you will be transporting both hazardous materials and liquids or gases in tanks.
To obtain an endorsement, you must pass additional written knowledge tests specific to the type of endorsement you are seeking. You may also need to complete additional training and provide additional documentation, such as a TSA background check for the Hazardous Materials endorsement.
The following are the common endorsements for a Class A CDL in Colorado:
1. T - Double/Triple Trailers: This endorsement is required if you will be operating double or triple trailers.
2. P - Passenger: This endorsement is required if you will be transporting passengers, such as a bus or shuttle.
3. N - Tank: This endorsement is required if you will be transporting liquids or gases in tanks.
4. H - Hazardous Materials: This endorsement is required if you will be transporting hazardous materials.
5. X - Combination of Tank Vehicle and Hazardous Materials: This endorsement is required if you will be transporting both hazardous materials and liquids or gases in tanks.
To obtain an endorsement, you must pass additional written knowledge tests specific to the type of endorsement you are seeking. You may also need to complete additional training and provide additional documentation, such as a TSA background check for the Hazardous Materials endorsement.
The Class A CDL (Commercial Driver's License) skills test in Colorado consists of three parts: the pre-trip inspection, basic vehicle control, and the road test.
1. Pre-trip Inspection: You will be required to perform a thorough inspection of your vehicle and explain to the examiner what you are checking for and why. This includes checking the brakes, tires, lights, coupling devices, and other important parts of the vehicle.
2. Basic Vehicle Control: You will be asked to demonstrate your ability to control the vehicle in various situations, such as straight-line backing, offset backing, parallel parking, and alley docking.
3. Road Test: During the road test, you will be evaluated on your ability to operate the vehicle safely and efficiently in traffic. The examiner will give you directions and observe how you handle different situations, such as intersections, lane changes, turns, and merging onto highways.
To pass the skills test, you must complete each section without making any major errors or safety violations. The examiner will provide you with feedback after each section of the test so you can improve your performance if needed.
1. Pre-trip Inspection: You will be required to perform a thorough inspection of your vehicle and explain to the examiner what you are checking for and why. This includes checking the brakes, tires, lights, coupling devices, and other important parts of the vehicle.
2. Basic Vehicle Control: You will be asked to demonstrate your ability to control the vehicle in various situations, such as straight-line backing, offset backing, parallel parking, and alley docking.
3. Road Test: During the road test, you will be evaluated on your ability to operate the vehicle safely and efficiently in traffic. The examiner will give you directions and observe how you handle different situations, such as intersections, lane changes, turns, and merging onto highways.
To pass the skills test, you must complete each section without making any major errors or safety violations. The examiner will provide you with feedback after each section of the test so you can improve your performance if needed.
Yes, there are some restrictions and limitations for drivers with a Class A CDL (Commercial Driver's License) in Colorado. Some of the common restrictions and limitations include:
1. Age: You must be at least 18 years old to obtain a Class A CDL, but you will be restricted to driving within the state of Colorado only until you turn 21.
2. Endorsements: As mentioned earlier, you may need to obtain endorsements depending on the type of cargo or vehicle you will be operating.
3. Medical Certification: You must pass a medical examination and carry a valid medical certificate with you at all times to show that you are physically qualified to operate a commercial motor vehicle.
4. Alcohol and Drug Use: You are subject to strict alcohol and drug use regulations, including pre-employment testing, random testing, post-accident testing, and reasonable suspicion testing.
5. Hours of Service: You must comply with federal regulations regarding the number of hours you can drive each day and each week. These rules are designed to prevent fatigue-related accidents and ensure that drivers get enough rest.
6. Vehicle Size and Weight: There may be restrictions on the size and weight of the vehicle you can operate with a Class A CDL, depending on the type of license and endorsements you have obtained.
It is important to understand these restrictions and limitations to ensure that you are operating your commercial motor vehicle safely and in compliance with all rules and regulations.
1. Age: You must be at least 18 years old to obtain a Class A CDL, but you will be restricted to driving within the state of Colorado only until you turn 21.
2. Endorsements: As mentioned earlier, you may need to obtain endorsements depending on the type of cargo or vehicle you will be operating.
3. Medical Certification: You must pass a medical examination and carry a valid medical certificate with you at all times to show that you are physically qualified to operate a commercial motor vehicle.
4. Alcohol and Drug Use: You are subject to strict alcohol and drug use regulations, including pre-employment testing, random testing, post-accident testing, and reasonable suspicion testing.
5. Hours of Service: You must comply with federal regulations regarding the number of hours you can drive each day and each week. These rules are designed to prevent fatigue-related accidents and ensure that drivers get enough rest.
6. Vehicle Size and Weight: There may be restrictions on the size and weight of the vehicle you can operate with a Class A CDL, depending on the type of license and endorsements you have obtained.
It is important to understand these restrictions and limitations to ensure that you are operating your commercial motor vehicle safely and in compliance with all rules and regulations.
In Colorado, the Class A CDL written test is available in several languages other than English. The languages available include Spanish, Russian, Chinese, Vietnamese, Korean, and French. This is to ensure that all applicants have a fair opportunity to pass the test and obtain a commercial driver's license.
However, it's important to note that the skills test is only available in English, so you must have a good understanding of the English language to pass the road test. Additionally, if you plan to operate a commercial vehicle that requires a hazardous materials endorsement, you must take the hazmat written test in English.
If you need to take the Class A CDL written test in a language other than English, you should contact your local DMV office to confirm which languages are available and make arrangements for testing.
However, it's important to note that the skills test is only available in English, so you must have a good understanding of the English language to pass the road test. Additionally, if you plan to operate a commercial vehicle that requires a hazardous materials endorsement, you must take the hazmat written test in English.
If you need to take the Class A CDL written test in a language other than English, you should contact your local DMV office to confirm which languages are available and make arrangements for testing.
Yes, if you have a disability that may affect your ability to take the Class A CDL written test, you may request accommodations to ensure that you have an equal opportunity to pass the test. The Americans with Disabilities Act (ADA) requires that all individuals with disabilities have equal access to programs and services, including DMV testing.
To request accommodations for the Class A CDL written test in Colorado, you will need to submit documentation of your disability and a request for accommodations to the DMV. The documentation should include information about your disability and how it affects your ability to take the test. Additionally, you should include specific requests for accommodations, such as extra time, a separate testing room, or a reader.
The DMV will review your request and documentation and determine what accommodations can be made. They may also require additional information or documentation before granting your request. It's important to submit your request for accommodations well in advance of your scheduled test date to allow time for review and processing.
Remember that the purpose of accommodations is to ensure that individuals with disabilities have an equal opportunity to pass the test, not to provide an unfair advantage over other test takers.
To request accommodations for the Class A CDL written test in Colorado, you will need to submit documentation of your disability and a request for accommodations to the DMV. The documentation should include information about your disability and how it affects your ability to take the test. Additionally, you should include specific requests for accommodations, such as extra time, a separate testing room, or a reader.
The DMV will review your request and documentation and determine what accommodations can be made. They may also require additional information or documentation before granting your request. It's important to submit your request for accommodations well in advance of your scheduled test date to allow time for review and processing.
Remember that the purpose of accommodations is to ensure that individuals with disabilities have an equal opportunity to pass the test, not to provide an unfair advantage over other test takers.
If you fail the Class A CDL written test in Colorado, you can retake the test, but you will have to wait at least one day before taking it again. You will have to pay the testing fee again each time you take the test.
It's important to note that passing the written test is one of the requirements for obtaining a commercial driver's license, but it's not the only requirement. You must also pass a skills test, which includes a pre-trip inspection, basic vehicle control, and on-road driving. So even if you pass the written test on your first attempt, you will still need to complete the skills test before obtaining your CDL.
If you fail the written test multiple times, it may be helpful to study more and take practice tests before attempting the test again. The Colorado DMV provides study materials and practice tests on their website to help you prepare for the test. Additionally, you may consider taking a CDL training course to improve your knowledge and skills.
It's important to note that passing the written test is one of the requirements for obtaining a commercial driver's license, but it's not the only requirement. You must also pass a skills test, which includes a pre-trip inspection, basic vehicle control, and on-road driving. So even if you pass the written test on your first attempt, you will still need to complete the skills test before obtaining your CDL.
If you fail the written test multiple times, it may be helpful to study more and take practice tests before attempting the test again. The Colorado DMV provides study materials and practice tests on their website to help you prepare for the test. Additionally, you may consider taking a CDL training course to improve your knowledge and skills.
