This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three possible answer choices. Test questions come from the Alaska Commercial Driver License Manual. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
1. An air compressor governor controls:
In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.
2. The two indicators that determine when you should upshift are:
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.
3. When should mirrors be adjusted?
The adjustment of your mirrors should be checked prior to the start of all trips. Adjust your mirrors as needed.
4. Mirrors should be used:
When driving, you should frequently check the mirrors on both sides of your vehicle.
5. If you are backing and the trailer begins to drift off-course, the driver should:
If your trailer begins to drift while you are backing, you should correct the drift immediately by turning the top of the steering wheel in the direction of the drift.
6. During a walk-around inspection, ensure the release arm is properly seated and the safety latch or lock is:
When inspecting the fifth wheel before a trip, you should ensure that the release arm is properly seated and the safety latch or lock is engaged. All components should be present and in proper working condition.
7. How can a driver maintain alertness while driving?
Eating heavy foods before driving or keeping the temperature in a cab too high can cause a driver to become drowsy while behind the wheel. Exercising and maintaining a healthy diet will help a driver to stay alert while driving.
Frequently Asked Questions
1. Obtain a valid Alaska Commercial Driver's License (CDL): Before you can apply for a Doubles/Triples endorsement, you must have a valid CDL.
2. Study the Alaska Commercial Driver License Manual: The manual covers all the topics you need to know for the Doubles/Triples endorsement test. You can download the manual from the Alaska Department of Motor Vehicles (DMV) website or pick up a copy at any DMV office.
3. Schedule an appointment with your local DMV: To take the Doubles/Triples endorsement test, you will need to schedule an appointment with your local DMV. You can do this online or by phone.
4. Take the Doubles/Triples endorsement knowledge test: The test consists of 20 multiple-choice questions, and you must score at least 80% to pass.
5. Pay the endorsement fee: If you pass the knowledge test, you will need to pay a fee to add the Doubles/Triples endorsement to your CDL.
6. Take a skills test: After passing the knowledge test and paying the fee, you will need to take a skills test in a vehicle with doubles or triples trailers.
7. Receive your Doubles/Triples endorsement: If you pass the skills test, your Alaska CDL will be updated with the Doubles/Triples endorsement.
Remember to bring all necessary documents with you when going to your appointment at the DMV. This may include your current driver's license, medical examiner's certificate, social security card or proof of legal presence in the United States, and payment for any fees associated with obtaining your CDL Doubles/Triples endorsement.
1. Be at least 21 years old: To operate a commercial vehicle with a Doubles/Triples endorsement, you must be at least 21 years old.
2. Hold a valid Alaska CDL: You must already hold a valid Alaska Commercial Driver's License (CDL) before you can apply for a Doubles/Triples endorsement.
3. Have a clean driving record: You must have a clean driving record with no serious traffic violations or DUI convictions within the past three years.
4. Pass a medical exam: You must pass a medical exam and obtain a valid medical examiner's certificate. This certificate verifies that you are physically fit to operate a commercial vehicle.
5. Pass the CDL Doubles/Triples endorsement knowledge test: You must pass the 20-question knowledge test covering the safe operation of double and triple trailers, coupling and uncoupling procedures, and other related topics.
6. Pass the CDL Doubles/Triples skills test: You must pass the skills test, which includes coupling and uncoupling the trailers, driving through different terrains, and performing other maneuvers.
7. Pay the necessary fees: You will need to pay any fees associated with obtaining your CDL Doubles/Triples endorsement.
It is important to note that obtaining a Doubles/Triples endorsement can be more challenging than obtaining a regular CDL due to the additional skills and knowledge required to safely operate these types of vehicles on public roads.
Additionally, some employers may require you to have a certain amount of experience or training before allowing you to operate double or triple trailers. It is always a good idea to check with potential employers about their specific requirements and preferences.
If you are new to commercial driving, it is recommended that you complete a commercial driver training program to gain the necessary skills and knowledge to operate these types of vehicles. These programs can be found at many vocational schools, community colleges, and truck driving schools.
It is important to note that the Alaska DMV requires all commercial drivers to complete a minimum of 30 hours of behind-the-wheel training before obtaining a CDL. This training must be completed at a DMV-approved training facility and must include at least 10 hours of driving on public roads.
In summary, while there are no specific experience or training requirements for obtaining a CDL Doubles/Triples endorsement in Alaska, it is highly recommended that you have some experience operating commercial vehicles and consider completing a commercial driver training program.
The questions on the test will cover safety regulations, legal weight limits, and other important information that is specific to operating double or triple trailers. You will need to correctly answer at least 16 questions (80%) to pass the test.
In addition to the written test, you must also pass a skills test that includes coupling and uncoupling the trailers, driving through different terrains, and performing other maneuvers. The skills test will demonstrate your ability to safely operate double or triple trailers on public roads.
Overall, obtaining a CDL Doubles/Triples endorsement requires passing both a written test and a skills test in addition to meeting other requirements such as having a clean driving record and passing a medical exam.
1. Coupling and uncoupling the trailers: You will need to properly connect and disconnect the double or triple trailers, ensuring that all connections are secure and all safety procedures are followed.
2. Pre-trip inspection: You will need to perform a pre-trip inspection of the vehicle, ensuring that all parts and equipment are in working order.
3. Shifting gears: You will need to demonstrate your ability to shift gears smoothly and efficiently while operating the double or triple trailers.
4. Driving in a straight line: You will need to drive the vehicle in a straight line while maintaining proper lane position and speed.
5. Turning: You will need to safely navigate turns, making sure that the trailer stays within the proper lane and does not swing out into other lanes or off the road.
6. Backing up: You will need to back up the vehicle safely, using proper backing techniques such as checking mirrors and using a spotter if necessary.
7. Coupling and uncoupling on an incline: You may be required to demonstrate your ability to connect and disconnect the trailers on an incline, such as a hill or ramp.
Overall, the skills test is designed to assess your ability to safely operate double or triple trailers in real-world driving situations. It is important to practice these maneuvers and techniques before taking the test, as failing any portion of the test will result in having to retake it at a later time.
Operating a commercial vehicle without the proper endorsement could result in fines, penalties, and even the suspension or revocation of your CDL. Additionally, driving a vehicle that you are not properly trained or licensed to operate can put you and others on the road at risk.
It is important to note that the requirements for obtaining a CDL Doubles/Triples endorsement include passing a written test and a skills test, as well as meeting other requirements such as having a clean driving record and passing a medical exam. It is important to ensure that you have the proper training and qualifications before operating double or triple trailers on public roads.
To apply for the endorsement, you will need to visit an Alaska DMV office and provide proof of your identity, residency, and citizenship or lawful presence in the United States. You will also need to self-certify your type of driving and provide a current medical certificate if required.
Once you have passed the required tests and met all other requirements, the DMV will add the Doubles/Triples endorsement to your existing CDL license. There may be an additional fee for adding the endorsement.
It is important to note that you must have a valid CDL before you can add any endorsements. If your CDL has expired, you will need to renew it before adding any endorsements.
1. Combination length: The maximum length for a combination of vehicles that includes double or triple trailers is 68 feet.
2. Weight limits: The maximum weight for a combination of vehicles that includes double or triple trailers is 80,000 pounds.
3. Required equipment: Vehicles with double or triple trailers are required to have certain equipment, such as underride guards and conspicuity markings, to increase visibility and safety.
4. Special driving considerations: Drivers with a Doubles/Triples endorsement must be especially cautious when turning, changing lanes, and braking due to the added length and weight of the vehicle.
It is important for drivers with a CDL Doubles/Triples endorsement to understand these restrictions and limitations and to operate their vehicles safely and responsibly at all times. Violating any of these restrictions could result in fines, penalties, or even the suspension or revocation of your CDL.
1. Weight Limits: The maximum gross vehicle weight (GVW) for double/triple trailers is 80,000 pounds.
2. Length Limits: The maximum length of double/triple trailers is 28 feet each, which means the total length of the combination of vehicles must not exceed 68 feet.
It is important to note that these limits may vary depending on the specific type of vehicle and the state or region in which you are operating. It is the responsibility of the driver to know and comply with all applicable weight and length limits. Any violation of these limits can result in penalties or fines, and can even lead to suspension or revocation of your CDL.
1. Vehicle Inspection: Before operating a double/triple trailer, it is important to conduct a thorough pre-trip inspection to ensure that all equipment is in good working condition.
2. Special Skills: Driving a double/triple trailer requires a higher level of skill and experience than driving a standard commercial vehicle. Drivers with a CDL Doubles/Triples endorsement are required to demonstrate their ability to safely operate these vehicles during their CDL skills test.
3. Special Equipment: Double/triple trailers are required to have certain safety equipment, such as underride guards, conspicuity markings, and reflective tape, to increase visibility and safety.
4. Safe Driving Practices: Drivers with a CDL Doubles/Triples endorsement must practice safe driving practices such as maintaining a safe following distance, reducing speed during turns or lane changes, and being aware of the added length and weight of the vehicle.
5. Weight Distribution: Proper weight distribution is crucial when operating double/triple trailers. Overloading or improperly distributing weight can lead to loss of control or other safety issues.
It is important for drivers with a CDL Doubles/Triples endorsement to understand and comply with these safety considerations and regulations in order to operate their vehicles safely and responsibly. Any violation of these regulations can result in penalties or fines, and can even lead to suspension or revocation of your CDL.