Double
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 or four possible answer choices. Test questions come from the North Carolina 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.
Number of Question
Passing Score
1. Belts in the engine compartment should be:
Explanation
When inspecting your vehicle's engine, check the belts for tightness and excessive wear. The amount of "give" that is safe for each belt in a given engine will vary, so learn what is appropriate for your vehicle.
2. Fully-loaded rigs:
Explanation
Because the weight of cargo gives them a higher center of gravity, fully-loaded rigs are 10 times more likely to roll over in a crash than empty rigs.
3. When you leave your vehicle, you should:
Explanation
Always apply the parking brake when leaving your vehicle.
4. When using a fire extinguisher on a fire, you should:
Explanation
When using a fire extinguisher, you should stand as far away from the fire as possible. Aim the extinguisher at the base of the fire, not at the flames. If you are not sure which kind of extinguisher should be used on a fire, particularly a hazardous materials fire, you should wait for the firefighters to arrive and allow them to extinguish it.
5. The air compressor is connected to the:
Explanation
The air compressor of an air brake system is connected to the engine through gears or a v-belt. The compressor may be air-cooled or cooled by the engine cooling system.
6. If the emergency air line loses pressure:
Explanation
The tractor protection valve keeps air in the trailer's braking system should the trailer break away or develop a leak. A loss of air pressure in the emergency line will cause the tractor protection valve to open and the emergency trailer brakes to activate.
7. If the brakes “pull” to one side or the other when you use them, it's a sign that:
Explanation
If your vehicle "pulls" to one side when braking, you may have brake trouble. If there is an issue with your brakes, you should fix the issue before driving. Operating an unsafe vehicle is against federal and state laws.
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Frequently Asked Questions
To obtain a CDL Doubles/Triples endorsement in North Carolina, follow these steps:
1. Obtain a North Carolina Commercial Driver's License (CDL) by passing the required knowledge and skills tests.
2. Complete a CDL Doubles/Triples endorsement application at a North Carolina DMV office.
3. Provide proof of identity, residency, and legal presence in the United States.
4. Pass the Doubles/Triples endorsement knowledge test. You can prepare for the test by studying the North Carolina Commercial Driver License Manual, which is available online or at any DMV office.
5. Pass a skills test in a commercial vehicle that has a set of double or triple trailers attached. The skills test will include a pre-trip inspection, basic vehicle control, and on-road driving.
6. Pay the appropriate fees for the CDL Doubles/Triples endorsement application and testing.
Once you have passed both the knowledge and skills tests and paid all applicable fees, your CDL will be updated to include the Doubles/Triples endorsement.
1. Obtain a North Carolina Commercial Driver's License (CDL) by passing the required knowledge and skills tests.
2. Complete a CDL Doubles/Triples endorsement application at a North Carolina DMV office.
3. Provide proof of identity, residency, and legal presence in the United States.
4. Pass the Doubles/Triples endorsement knowledge test. You can prepare for the test by studying the North Carolina Commercial Driver License Manual, which is available online or at any DMV office.
5. Pass a skills test in a commercial vehicle that has a set of double or triple trailers attached. The skills test will include a pre-trip inspection, basic vehicle control, and on-road driving.
6. Pay the appropriate fees for the CDL Doubles/Triples endorsement application and testing.
Once you have passed both the knowledge and skills tests and paid all applicable fees, your CDL will be updated to include the Doubles/Triples endorsement.
To obtain a CDL Doubles/Triples license in North Carolina, you must meet the following requirements:
1. Be at least 18 years of age: To operate a commercial vehicle within the state of North Carolina, you must be at least 18 years of age. However, you must be at least 21 years old to drive a commercial vehicle across state lines or transport hazardous materials.
2. Hold a valid North Carolina CDL: You must already hold a valid North Carolina Commercial Driver's License (CDL) or be applying for one at the same time.
3. Pass the Doubles/Triples endorsement knowledge test: To obtain a Doubles/Triples endorsement, you must pass a knowledge test that covers information specific to driving vehicles with multiple trailers.
4. Pass the Doubles/Triples endorsement skills test: You must also pass a skills test that demonstrates your ability to safely operate a commercial vehicle with two or three trailers attached.
5. Meet medical requirements: You must meet the physical qualifications established by the Federal Motor Carrier Safety Administration (FMCSA) in order to operate a commercial vehicle.
6. Provide required documentation: You will need to provide documentation of your identity, residency, and legal presence in the United States.
7. Pay applicable fees: There are fees associated with obtaining a CDL Doubles/Triples license, including application fees and testing fees.
1. Be at least 18 years of age: To operate a commercial vehicle within the state of North Carolina, you must be at least 18 years of age. However, you must be at least 21 years old to drive a commercial vehicle across state lines or transport hazardous materials.
2. Hold a valid North Carolina CDL: You must already hold a valid North Carolina Commercial Driver's License (CDL) or be applying for one at the same time.
3. Pass the Doubles/Triples endorsement knowledge test: To obtain a Doubles/Triples endorsement, you must pass a knowledge test that covers information specific to driving vehicles with multiple trailers.
4. Pass the Doubles/Triples endorsement skills test: You must also pass a skills test that demonstrates your ability to safely operate a commercial vehicle with two or three trailers attached.
5. Meet medical requirements: You must meet the physical qualifications established by the Federal Motor Carrier Safety Administration (FMCSA) in order to operate a commercial vehicle.
6. Provide required documentation: You will need to provide documentation of your identity, residency, and legal presence in the United States.
7. Pay applicable fees: There are fees associated with obtaining a CDL Doubles/Triples license, including application fees and testing fees.
Yes, you will need some specific experience or training to obtain a CDL Doubles/Triples endorsement in North Carolina. You must have a valid Class A Commercial Driver's License and pass a Doubles/Triples endorsement knowledge test and a skills test. The skills test will include a pre-trip inspection, basic vehicle control, and on-road driving in a commercial vehicle with double or triple trailers attached.
Before taking the skills test, it is recommended that you receive training on the proper techniques for driving a commercial vehicle with multiple trailers. You may choose to enroll in a CDL training program that includes instruction on doubles/triples operation and safety.
Additionally, it is required by law that you have at least one year of experience driving a commercial vehicle with a single trailer before you can obtain a CDL Doubles/Triples endorsement. This experience is necessary to ensure that you have the necessary skills and knowledge to safely operate a commercial vehicle with multiple trailers attached.
Before taking the skills test, it is recommended that you receive training on the proper techniques for driving a commercial vehicle with multiple trailers. You may choose to enroll in a CDL training program that includes instruction on doubles/triples operation and safety.
Additionally, it is required by law that you have at least one year of experience driving a commercial vehicle with a single trailer before you can obtain a CDL Doubles/Triples endorsement. This experience is necessary to ensure that you have the necessary skills and knowledge to safely operate a commercial vehicle with multiple trailers attached.
Yes, to obtain a CDL Doubles/Triples endorsement in North Carolina, you must pass an additional written test specifically for this endorsement. The Doubles/Triples endorsement knowledge test is designed to assess your knowledge of the rules and regulations related to operating a commercial vehicle with multiple trailers.
The Doubles/Triples endorsement knowledge test covers topics such as:
- Coupling and uncoupling of multiple trailers
- Inspection and maintenance of multiple trailers
- Safe driving practices for vehicles with multiple trailers
- Weight distribution and load securement for multiple trailers
You must pass this test with a score of at least 80% in order to obtain the Doubles/Triples endorsement.
In addition to the Doubles/Triples endorsement knowledge test, you will also need to pass the standard CDL general knowledge test, as well as any other applicable endorsement tests for the type of commercial vehicle you will be driving (such as hazardous materials or passenger transport).
The Doubles/Triples endorsement knowledge test covers topics such as:
- Coupling and uncoupling of multiple trailers
- Inspection and maintenance of multiple trailers
- Safe driving practices for vehicles with multiple trailers
- Weight distribution and load securement for multiple trailers
You must pass this test with a score of at least 80% in order to obtain the Doubles/Triples endorsement.
In addition to the Doubles/Triples endorsement knowledge test, you will also need to pass the standard CDL general knowledge test, as well as any other applicable endorsement tests for the type of commercial vehicle you will be driving (such as hazardous materials or passenger transport).
In North Carolina, to obtain a CDL Doubles/Triples endorsement, you must pass a skills test that measures your ability to safely operate a commercial vehicle with multiple trailers attached. The skills test consists of three parts:
1. Pre-trip inspection: You must perform a thorough inspection of the commercial vehicle and all trailers attached. This includes checking the coupling mechanisms, brakes, tires, lights, and other critical components to ensure that they are in proper working order.
2. Basic vehicle control: You must demonstrate your ability to maneuver the commercial vehicle with multiple trailers attached in a controlled manner. This includes performing backing maneuvers, such as straight-line backing and offset backing.
3. On-road driving: You must demonstrate your ability to safely operate the commercial vehicle with multiple trailers attached on public roads. During the on-road portion of the skills test, you will be evaluated on your ability to handle turns, intersections, lane changes, and other driving situations safely and effectively.
Throughout the skills test, you will be evaluated on your ability to follow proper procedures for coupling and uncoupling multiple trailers, as well as your knowledge of weight distribution and load securement requirements for vehicles with multiple trailers. You will also be evaluated on your adherence to safety regulations and your overall driving performance.
1. Pre-trip inspection: You must perform a thorough inspection of the commercial vehicle and all trailers attached. This includes checking the coupling mechanisms, brakes, tires, lights, and other critical components to ensure that they are in proper working order.
2. Basic vehicle control: You must demonstrate your ability to maneuver the commercial vehicle with multiple trailers attached in a controlled manner. This includes performing backing maneuvers, such as straight-line backing and offset backing.
3. On-road driving: You must demonstrate your ability to safely operate the commercial vehicle with multiple trailers attached on public roads. During the on-road portion of the skills test, you will be evaluated on your ability to handle turns, intersections, lane changes, and other driving situations safely and effectively.
Throughout the skills test, you will be evaluated on your ability to follow proper procedures for coupling and uncoupling multiple trailers, as well as your knowledge of weight distribution and load securement requirements for vehicles with multiple trailers. You will also be evaluated on your adherence to safety regulations and your overall driving performance.
No, in North Carolina, you must have a CDL Doubles/Triples endorsement in order to legally operate a commercial vehicle with multiple trailers attached. It is against the law to operate a commercial vehicle with multiple trailers without the proper endorsement on your CDL license.
The Doubles/Triples endorsement is required for any driver who operates a commercial vehicle with two or three separate trailers or semitrailers. This endorsement is designed to ensure that drivers have the knowledge and skills necessary to safely operate these larger vehicles, which require additional training and experience to operate safely.
To obtain a Doubles/Triples endorsement on your CDL license in North Carolina, you must pass an additional written test and a skills test that specifically measures your ability to safely operate a commercial vehicle with multiple trailers attached. Once you have obtained this endorsement, you will be legally authorized to operate double or triple trailers, provided that you are also licensed and qualified to drive the specific type of commercial vehicle in question.
The Doubles/Triples endorsement is required for any driver who operates a commercial vehicle with two or three separate trailers or semitrailers. This endorsement is designed to ensure that drivers have the knowledge and skills necessary to safely operate these larger vehicles, which require additional training and experience to operate safely.
To obtain a Doubles/Triples endorsement on your CDL license in North Carolina, you must pass an additional written test and a skills test that specifically measures your ability to safely operate a commercial vehicle with multiple trailers attached. Once you have obtained this endorsement, you will be legally authorized to operate double or triple trailers, provided that you are also licensed and qualified to drive the specific type of commercial vehicle in question.
In North Carolina, you can add the CDL Doubles/Triples endorsement to your existing CDL license without having to apply for a new license. To add the endorsement, you will need to pass an additional written test and a skills test that specifically measures your ability to safely operate a commercial vehicle with multiple trailers attached.
To add the Doubles/Triples endorsement to your CDL license, you should follow these steps:
1. Study for the Doubles/Triples endorsement test by reviewing the North Carolina Commercial Driver's License Manual and taking practice tests.
2. Schedule an appointment at your local NC DMV office to take the Doubles/Triples endorsement written test. You will need to bring your CDL license and pay the required fee.
3. Pass the written test by answering at least 80% of the questions correctly.
4. Schedule a skills test appointment at a designated NC DMV testing location. You will need to bring a commercial vehicle with multiple trailers attached for the skills test.
5. Pass the skills test by demonstrating your ability to safely operate a commercial vehicle with multiple trailers attached.
Once you have passed both tests, the NC DMV will add the Doubles/Triples endorsement to your existing CDL license, which will allow you to legally operate a commercial vehicle with multiple trailers attached.
To add the Doubles/Triples endorsement to your CDL license, you should follow these steps:
1. Study for the Doubles/Triples endorsement test by reviewing the North Carolina Commercial Driver's License Manual and taking practice tests.
2. Schedule an appointment at your local NC DMV office to take the Doubles/Triples endorsement written test. You will need to bring your CDL license and pay the required fee.
3. Pass the written test by answering at least 80% of the questions correctly.
4. Schedule a skills test appointment at a designated NC DMV testing location. You will need to bring a commercial vehicle with multiple trailers attached for the skills test.
5. Pass the skills test by demonstrating your ability to safely operate a commercial vehicle with multiple trailers attached.
Once you have passed both tests, the NC DMV will add the Doubles/Triples endorsement to your existing CDL license, which will allow you to legally operate a commercial vehicle with multiple trailers attached.
Yes, there are certain restrictions and limitations for drivers with a CDL Doubles/Triples endorsement in North Carolina.
Firstly, drivers with a Doubles/Triples endorsement are only authorized to operate commercial vehicles with two or three separate trailers or semitrailers. They are not authorized to operate any other type of commercial vehicle that requires a different endorsement or specialized training.
Secondly, there are certain weight restrictions that apply to commercial vehicles with multiple trailers. For example, in North Carolina, the maximum combined weight for a commercial vehicle with two separate trailers is 90,000 pounds. Drivers with a Doubles/Triples endorsement must also comply with all other federal and state weight and size regulations.
Thirdly, drivers with a Doubles/Triples endorsement must also comply with all other applicable traffic laws and regulations. This includes obeying speed limits, traffic signals, and other rules of the road.
Lastly, it is important to note that the Doubles/Triples endorsement is only valid as long as your CDL license is valid. If your CDL license expires or is suspended or revoked for any reason, your Doubles/Triples endorsement will also be invalidated.
Firstly, drivers with a Doubles/Triples endorsement are only authorized to operate commercial vehicles with two or three separate trailers or semitrailers. They are not authorized to operate any other type of commercial vehicle that requires a different endorsement or specialized training.
Secondly, there are certain weight restrictions that apply to commercial vehicles with multiple trailers. For example, in North Carolina, the maximum combined weight for a commercial vehicle with two separate trailers is 90,000 pounds. Drivers with a Doubles/Triples endorsement must also comply with all other federal and state weight and size regulations.
Thirdly, drivers with a Doubles/Triples endorsement must also comply with all other applicable traffic laws and regulations. This includes obeying speed limits, traffic signals, and other rules of the road.
Lastly, it is important to note that the Doubles/Triples endorsement is only valid as long as your CDL license is valid. If your CDL license expires or is suspended or revoked for any reason, your Doubles/Triples endorsement will also be invalidated.
In North Carolina, the maximum weight and length limits for double/triple trailers with a CDL Doubles/Triples endorsement are as follows:
1. The maximum weight for a commercial vehicle with two separate trailers is 90,000 pounds.
2. The maximum weight for a commercial vehicle with three separate trailers is 80,000 pounds.
3. The maximum length for a commercial vehicle with two separate trailers is 28 feet per trailer.
4. The maximum length for a commercial vehicle with three separate trailers is 28 feet per trailer.
It is important to note that these weight and length limits are subject to change and may vary depending on the type of cargo being transported, the number of axles on the vehicle, and other factors. Drivers with a CDL Doubles/Triples endorsement must always comply with all applicable federal and state weight and size regulations to ensure safe operation of their commercial vehicle.
1. The maximum weight for a commercial vehicle with two separate trailers is 90,000 pounds.
2. The maximum weight for a commercial vehicle with three separate trailers is 80,000 pounds.
3. The maximum length for a commercial vehicle with two separate trailers is 28 feet per trailer.
4. The maximum length for a commercial vehicle with three separate trailers is 28 feet per trailer.
It is important to note that these weight and length limits are subject to change and may vary depending on the type of cargo being transported, the number of axles on the vehicle, and other factors. Drivers with a CDL Doubles/Triples endorsement must always comply with all applicable federal and state weight and size regulations to ensure safe operation of their commercial vehicle.
Yes, there are specific safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement in North Carolina. Some of the key regulations include:
1. Specialized training: Drivers with a CDL Doubles/Triples endorsement must complete specialized training to operate commercial vehicles with multiple trailers. This includes instruction on coupling and uncoupling trailers, backing and turning techniques, and other skills specific to driving double/triple trailers.
2. Weight distribution: Proper weight distribution is critical for safe operation of commercial vehicles with multiple trailers. Drivers must ensure that the weight is evenly distributed across all axles and trailers to prevent overloading or instability.
3. Braking systems: Commercial vehicles with multiple trailers must have a properly functioning braking system that can stop the entire vehicle safely and quickly.
4. Turning radius: Commercial vehicles with multiple trailers have a larger turning radius than single-trailer vehicles, which can make turning more challenging. Drivers must be aware of their vehicle's turning radius and take extra precautions when making turns.
5. Lane usage: Commercial vehicles with multiple trailers require more space on the road than single-trailer vehicles. Drivers must be aware of their vehicle's width and stay in the appropriate lanes to avoid collisions with other vehicles.
6. Speed limits: Commercial vehicles with multiple trailers are subject to lower speed limits on some roads and highways to ensure safe operation.
It is important for drivers with a CDL Doubles/Triples endorsement to follow all safety regulations and guidelines to prevent accidents and ensure safe operation of their commercial vehicle.
1. Specialized training: Drivers with a CDL Doubles/Triples endorsement must complete specialized training to operate commercial vehicles with multiple trailers. This includes instruction on coupling and uncoupling trailers, backing and turning techniques, and other skills specific to driving double/triple trailers.
2. Weight distribution: Proper weight distribution is critical for safe operation of commercial vehicles with multiple trailers. Drivers must ensure that the weight is evenly distributed across all axles and trailers to prevent overloading or instability.
3. Braking systems: Commercial vehicles with multiple trailers must have a properly functioning braking system that can stop the entire vehicle safely and quickly.
4. Turning radius: Commercial vehicles with multiple trailers have a larger turning radius than single-trailer vehicles, which can make turning more challenging. Drivers must be aware of their vehicle's turning radius and take extra precautions when making turns.
5. Lane usage: Commercial vehicles with multiple trailers require more space on the road than single-trailer vehicles. Drivers must be aware of their vehicle's width and stay in the appropriate lanes to avoid collisions with other vehicles.
6. Speed limits: Commercial vehicles with multiple trailers are subject to lower speed limits on some roads and highways to ensure safe operation.
It is important for drivers with a CDL Doubles/Triples endorsement to follow all safety regulations and guidelines to prevent accidents and ensure safe operation of their commercial vehicle.
