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 three possible answer choices. Test questions come from the New Mexico 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.
1. If the safety relief valve in an air brake system is releasing air:
The safety relief valve in an air brake system releases air if necessary to prevent pressure in the system from becoming too high. If the valve starts releasing air, there is something wrong. Have a mechanic fix the problem.
2. Without the proper amount of oil in its engine:
It is essential that a vehicle's engine have adequate oil pressure. An engine can be destroyed rapidly if it is run without oil.
3. A vehicle that is smaller than your vehicle:
In general, a smaller vehicle will be able to come to a complete stop faster than a larger vehicle. Keep this in mind when determining your following distance.
4. A tread depth of ____ should be in every major groove of a front tire.
For safe operation, a commercial motor vehicle needs a tread depth of 4/32 of an inch in every major groove on the front tires, and a tread depth of 2/32 of an inch on other tires.
5. During an inspection, slack adjusters on S-cam brakes should not move more than:
Check each slack adjuster after parking on level ground, setting wheel chocks, and disengaging the parking brake. Pull the slack adjusters to make sure they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.
6. The leakage rate for a triple combination vehicle with air brakes should be no more than ____ in one minute during a static leakage test.
When performing a static leakage test on a triple combination vehicle with air brakes, the leakage rate should be no more than 5 psi in one minute. If the air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.
7. If there is a fire in your vehicle, you should not:
In the event of a vehicle fire, you should leave the road and stop in an open area. Do not pull into a service station as fuels at the service station could catch fire. Report the fire and your location to emergency services.
Frequently Asked Questions
To obtain a Class A CDL in New Mexico, you must first pass a written knowledge test and a driving skills test. You must also meet certain medical and residency requirements, have a valid driver's license, and pass a background check.
Once you have your Class A CDL, you may need to obtain endorsements for specific types of vehicles or cargo that you will be transporting. These endorsements may include hazardous materials, tankers, doubles/triples, or passenger vehicles.
It's important to note that operating a commercial vehicle without the proper license can result in fines and other penalties.
1. Tractor-trailers: A combination of a truck tractor and one or more trailers or semi-trailers.
2. Double and triple trailers: A combination of two or three trailers or semi-trailers.
3. Tanker vehicles: Vehicles designed to transport liquids or gases, such as gasoline, milk, or propane.
4. Livestock carriers: Vehicles designed to transport live animals.
5. Flatbed trucks: Trucks with an open flatbed for hauling large items.
6. Dump trucks: Trucks designed to haul loose materials, such as dirt and gravel.
7. Heavy haulers: Vehicles designed to carry oversized loads.
It's important to note that specific endorsements may be required for certain types of vehicles or cargo, such as hazardous materials or passenger vehicles.
1. Age: You must be at least 18 years old to obtain a Class A CDL, but you cannot operate a commercial vehicle across state lines until you are 21 years old.
2. Residency: You must be a resident of New Mexico or have proof of legal presence in the United States.
3. Medical requirements: You must pass a medical examination and obtain a medical examiner's certificate.
4. Driver's license: You must have a valid driver's license.
5. Knowledge test: You must pass a written knowledge test covering general commercial driving topics, such as safety, vehicle inspection, and road rules.
6. Skills test: You must pass a skills test that includes a pre-trip inspection, basic vehicle control, and on-road driving.
7. Background check: You must pass a background check that includes driving records and criminal history.
Once you have met these requirements and obtained your Class A CDL license, you may need to obtain additional endorsements for specific types of vehicles or cargo that you will be transporting. These endorsements may include hazardous materials, tanker vehicles, doubles/triples, or passenger vehicles.
Drivers who are 21 years old or older may operate a commercial motor vehicle across state lines as long as they meet the other federal and state requirements for obtaining a CDL. It's important to note that some employers may have their own age requirements for certain types of commercial driving jobs.
Here are the common endorsements for a Class A CDL license:
1. Hazmat endorsement: Required if you plan to transport hazardous materials.
2. Tanker endorsement: Required if you plan to transport liquids or gases in bulk.
3. Doubles/Triples endorsement: Required if you plan to haul double or triple trailers.
4. Passenger endorsement: Required if you plan to transport passengers for hire.
To obtain an endorsement, you must pass a written knowledge test and, in some cases, a skills test. Some endorsements require additional background checks or other requirements. It's important to note that endorsements may have different age requirements and fees than the base CDL license.
1. Pre-Trip Inspection Test: During this part of the test, you will be asked to demonstrate your knowledge of the commercial vehicle's components and safety features. You will be asked to visually inspect the vehicle and identify any potential safety hazards or mechanical issues.
2. Driving Skills Test: During this part of the test, you will be asked to demonstrate your driving skills in a commercial vehicle. You will be tested on your ability to safely handle the vehicle, including backing up, turning, and parking. You will also be tested on your ability to perform basic maneuvers, such as shifting gears and using turn signals.
The driving skills test is typically conducted on a closed course or in a controlled environment on public roads under the supervision of an examiner. The examiner will score your performance based on a set of criteria defined by the Federal Motor Carrier Safety Administration (FMCSA).
It's important to note that the Class A CDL skills test is a rigorous exam that requires significant preparation and practice. You should consider enrolling in a CDL training program to help you prepare for the exam and gain the necessary skills and knowledge to become a safe and competent commercial driver.
1. Endorsement Restrictions: If you have a Class A CDL with specific endorsements, you may be limited to driving certain types of commercial vehicles or carrying certain types of cargo. For example, if you have a hazmat endorsement, you may be restricted from driving certain routes or carrying certain hazardous materials.
2. Vehicle Restrictions: Depending on the weight and size of the vehicle, some Class A CDL drivers may be restricted from driving certain types of commercial vehicles. For example, if you only have experience driving tractor-trailers, you may be restricted from driving larger commercial vehicles like buses or tankers.
3. Medical Restrictions: All commercial drivers must pass a medical exam to obtain and maintain their CDL license. If a driver has certain medical conditions or takes certain medications, they may be restricted from driving commercial vehicles.
4. Time Restrictions: Some states have restrictions on the hours of operation for commercial drivers. For example, in New Mexico, commercial drivers are limited to 11 hours of driving time and 14 hours of on-duty time per day.
It's important to be aware of any restrictions or limitations that apply to your Class A CDL license to avoid violations that could result in fines or even the loss of your license.
However, it's important to note that you will still need to be able to read and understand English signs and signals on the road. Additionally, the skills test that you will need to take to obtain your Class A CDL license is typically conducted in English.
If you need assistance with understanding the English language, you may be able to bring a translator with you to the test. However, the translator must be approved by the MVD and may not be a family member or friend.
Be sure to check with your local MVD office for specific requirements and procedures for taking the Class A CDL written test in a language other than English.
To request accommodations for the written test, you will need to fill out an Application for Reasonable Accommodations and submit it to the MVD. The application requires you to provide documentation of your disability and the specific accommodations that you are requesting.
The MVD will review your application and determine if the requested accommodations are reasonable and necessary. Reasonable accommodations may include things like extended testing time, a reader, or a sign language interpreter.
It's important to note that you will need to submit your application and documentation well in advance of your scheduled test date to allow time for review and approval of your request.
For more information on requesting accommodations for the Class A CDL written test, contact your local MVD office or visit the New Mexico MVD website.
In New Mexico, if you fail the written test, you must wait at least one day before you can retake it. If you fail the test three times, you will need to wait at least 30 days before taking it again.
It's important to note that there may be additional fees associated with retaking the test. Be sure to check with your local Motor Vehicle Division (MVD) office for specific information on fees and waiting periods.
To prepare for the written test and increase your chances of passing, you can study the New Mexico CDL manual and take practice tests. Many resources are available online or through local driving schools.
If you continue to have difficulty passing the written test, you may want to consider getting additional help or tutoring to improve your knowledge and understanding of the material.