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 four possible answer choices. Test questions come from the New Jersey Commercial Driver Guide. 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
15. What causes the "crack-the-whip" effect?
Explanation
Vehicles with trailers are vulnerable to rollover due to the "crack-the-whip" effect, which is caused by rearward amplification. Rearward amplification varies from vehicle to vehicle, so it is important that drivers are aware of the rearward amplification of their specific vehicles.
16. Retreaded tires:
Explanation
Regrooved, recapped, or retreaded tires are prohibited from use on the front wheels of a bus.
17. When starting the engine of a truck with a trailer, how can you tell if the Anti-Lock Braking System (ABS) is not working?
Explanation
Trailers equipped with Anti-Lock Braking Systems (ABS) are equipped on the left rear with a yellow malfunction lamp. If the malfunction lamp stays on after the engine has been started, the ABS is malfunctioning.
18. During a trip, which shut-off valves should be open?
Explanation
When starting a trip, be sure that all shut-off valves are in the open position, except for the last valves on the rear trailer. It is important that air reaches the brakes on all trailers and that the air is not able to escape from the back of the vehicle.
19. An example of mandatory emergency equipment is:
Explanation
Mandatory emergency equipment includes: at least one fire extinguisher; spare electrical fuses (unless the vehicle is equipped with circuit breakers); and warning devices for parked vehicles (such as reflective triangles).
20. 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.
Frequently Asked Questions
To obtain a CDL Doubles/Triples endorsement in New Jersey, follow these steps:
1. Obtain a New Jersey Commercial Driver's License (CDL) by passing the required knowledge and skills tests.
2. Verify that you have at least 2 years of driving experience with a standard CDL.
3. Obtain the New Jersey CDL manual and study the section on Doubles/Triples.
4. Schedule an appointment with your local New Jersey Motor Vehicle Commission (MVC) agency to take the Doubles/Triples endorsement knowledge test.
5. Pay the required fee for the test.
6. Pass the endorsement knowledge test with a score of 80% or higher.
7. If you pass the endorsement knowledge test, schedule an appointment to take the Doubles/Triples endorsement skills test with a qualified testing facility.
8. Bring a vehicle that meets the requirements for Doubles/Triples operation, as well as proof of insurance for that vehicle, to your skills test appointment.
9. Pass the skills test by demonstrating your ability to safely operate a Double/Triple combination vehicle.
10. Once you pass both tests, pay the required fee and receive your new CDL with Doubles/Triples endorsement.
It is important to note that additional requirements may apply for certain endorsements, such as medical certification or background checks. Be sure to check the New Jersey MVC website or contact them directly for more information on obtaining a CDL with endorsements.
1. Obtain a New Jersey Commercial Driver's License (CDL) by passing the required knowledge and skills tests.
2. Verify that you have at least 2 years of driving experience with a standard CDL.
3. Obtain the New Jersey CDL manual and study the section on Doubles/Triples.
4. Schedule an appointment with your local New Jersey Motor Vehicle Commission (MVC) agency to take the Doubles/Triples endorsement knowledge test.
5. Pay the required fee for the test.
6. Pass the endorsement knowledge test with a score of 80% or higher.
7. If you pass the endorsement knowledge test, schedule an appointment to take the Doubles/Triples endorsement skills test with a qualified testing facility.
8. Bring a vehicle that meets the requirements for Doubles/Triples operation, as well as proof of insurance for that vehicle, to your skills test appointment.
9. Pass the skills test by demonstrating your ability to safely operate a Double/Triple combination vehicle.
10. Once you pass both tests, pay the required fee and receive your new CDL with Doubles/Triples endorsement.
It is important to note that additional requirements may apply for certain endorsements, such as medical certification or background checks. Be sure to check the New Jersey MVC website or contact them directly for more information on obtaining a CDL with endorsements.
To get a CDL Doubles/Triples license in New Jersey, you must meet the following requirements:
1. Be at least 21 years old: The minimum age to drive a commercial vehicle in interstate commerce is 21 years old.
2. Have a valid New Jersey CDL: You must have a valid New Jersey CDL or obtain one before applying for the Doubles/Triples endorsement.
3. Have at least two years of driving experience: You must have at least two years of driving experience with a standard CDL before applying for the Doubles/Triples endorsement.
4. Pass the Doubles/Triples knowledge test: You must pass the knowledge test specific to the Doubles/Triples endorsement.
5. Pass the Doubles/Triples skills test: You must pass a skills test that demonstrates your ability to safely operate a Double/Triple combination vehicle.
6. Meet medical requirements: You must meet all medical requirements to operate a commercial vehicle, including passing a physical examination and carrying a valid medical certificate.
7. Meet other eligibility requirements: You must also meet other eligibility requirements, such as having a safe driving record, not being disqualified from operating a commercial vehicle, and not having any outstanding traffic tickets or warrants.
It is important to note that additional requirements may apply for certain endorsements, such as background checks or additional testing. Be sure to check with the New Jersey Motor Vehicle Commission or your employer for more information on specific requirements for obtaining a CDL with Doubles/Triples endorsement.
1. Be at least 21 years old: The minimum age to drive a commercial vehicle in interstate commerce is 21 years old.
2. Have a valid New Jersey CDL: You must have a valid New Jersey CDL or obtain one before applying for the Doubles/Triples endorsement.
3. Have at least two years of driving experience: You must have at least two years of driving experience with a standard CDL before applying for the Doubles/Triples endorsement.
4. Pass the Doubles/Triples knowledge test: You must pass the knowledge test specific to the Doubles/Triples endorsement.
5. Pass the Doubles/Triples skills test: You must pass a skills test that demonstrates your ability to safely operate a Double/Triple combination vehicle.
6. Meet medical requirements: You must meet all medical requirements to operate a commercial vehicle, including passing a physical examination and carrying a valid medical certificate.
7. Meet other eligibility requirements: You must also meet other eligibility requirements, such as having a safe driving record, not being disqualified from operating a commercial vehicle, and not having any outstanding traffic tickets or warrants.
It is important to note that additional requirements may apply for certain endorsements, such as background checks or additional testing. Be sure to check with the New Jersey Motor Vehicle Commission or your employer for more information on specific requirements for obtaining a CDL with Doubles/Triples endorsement.
Yes, you need specific experience and training to obtain a CDL Doubles/Triples endorsement in New Jersey.
Firstly, you must have at least two years of driving experience with a standard CDL before applying for the Doubles/Triples endorsement. This experience is important because Double/Triple combination vehicles are more difficult to maneuver and require additional driving skills.
Secondly, you should consider receiving additional training before attempting to obtain the Doubles/Triples endorsement. The training should include both classroom instruction and behind-the-wheel training on Double/Triple combination vehicles. This will help you gain the necessary knowledge and skills to safely operate these vehicles.
The training can be provided by a certified truck driving school or by your employer. It is recommended that you receive training from a reputable school or trainer that is certified by the Professional Truck Driver Institute (PTDI) or another recognized organization.
In addition to the above, you may also need to meet other state-specific requirements for obtaining a CDL Doubles/Triples endorsement. Be sure to check with the New Jersey Motor Vehicle Commission or your employer for more information on specific requirements and training programs available in your area.
Firstly, you must have at least two years of driving experience with a standard CDL before applying for the Doubles/Triples endorsement. This experience is important because Double/Triple combination vehicles are more difficult to maneuver and require additional driving skills.
Secondly, you should consider receiving additional training before attempting to obtain the Doubles/Triples endorsement. The training should include both classroom instruction and behind-the-wheel training on Double/Triple combination vehicles. This will help you gain the necessary knowledge and skills to safely operate these vehicles.
The training can be provided by a certified truck driving school or by your employer. It is recommended that you receive training from a reputable school or trainer that is certified by the Professional Truck Driver Institute (PTDI) or another recognized organization.
In addition to the above, you may also need to meet other state-specific requirements for obtaining a CDL Doubles/Triples endorsement. Be sure to check with the New Jersey Motor Vehicle Commission or your employer for more information on specific requirements and training programs available in your area.
Yes, there is an additional written test that you must pass to obtain a CDL Doubles/Triples endorsement in New Jersey. The Doubles/Triples endorsement test is a knowledge test that covers the following topics:
1. Inspecting Doubles/Triples: This section covers the inspection of Double/Triple combination vehicles, including the coupling system, air brakes, and electrical systems.
2. Coupling and uncoupling: This section covers the proper procedures for coupling and uncoupling Double/Triple combination vehicles.
3. Driving Doubles/Triples: This section covers the safe driving practices for operating Double/Triple combination vehicles, including turning, backing up, and braking.
4. Combination vehicle air brakes: This section covers the proper operation and maintenance of air brakes on Double/Triple combination vehicles.
You must pass this test with a score of at least 80% to obtain the Doubles/Triples endorsement.
It is important to study for the test by reviewing the New Jersey Commercial Driver License Manual and any additional materials provided by your training program or employer. You may also consider taking practice tests or quizzes to help you prepare for the actual exam.
In addition to the written test, you will also need to pass a skills test that demonstrates your ability to safely operate a Double/Triple combination vehicle. The skills test will include a pre-trip inspection, basic control skills, and an on-road driving test.
1. Inspecting Doubles/Triples: This section covers the inspection of Double/Triple combination vehicles, including the coupling system, air brakes, and electrical systems.
2. Coupling and uncoupling: This section covers the proper procedures for coupling and uncoupling Double/Triple combination vehicles.
3. Driving Doubles/Triples: This section covers the safe driving practices for operating Double/Triple combination vehicles, including turning, backing up, and braking.
4. Combination vehicle air brakes: This section covers the proper operation and maintenance of air brakes on Double/Triple combination vehicles.
You must pass this test with a score of at least 80% to obtain the Doubles/Triples endorsement.
It is important to study for the test by reviewing the New Jersey Commercial Driver License Manual and any additional materials provided by your training program or employer. You may also consider taking practice tests or quizzes to help you prepare for the actual exam.
In addition to the written test, you will also need to pass a skills test that demonstrates your ability to safely operate a Double/Triple combination vehicle. The skills test will include a pre-trip inspection, basic control skills, and an on-road driving test.
To obtain a CDL Doubles/Triples endorsement in New Jersey, you must pass a skills test that demonstrates your ability to safely operate a Double/Triple combination vehicle. The skills test consists of three parts:
1. Pre-trip inspection: You will be required to perform a thorough inspection of your Double/Triple combination vehicle and explain to the examiner what you are checking for and why.
2. Basic control skills: You will be required to demonstrate your ability to control the Double/Triple combination vehicle in a variety of situations, including straight-line backing, offset backing, and parallel parking.
3. On-road driving: You will be required to demonstrate your ability to safely operate the Double/Triple combination vehicle on public roads. You will be evaluated on your ability to complete a variety of driving maneuvers, including turning, merging, and braking.
During the skills test, you must demonstrate the following specific skills or maneuvers:
1. Coupling and uncoupling: You must demonstrate your ability to properly couple and uncouple the Double/Triple combination vehicle.
2. Straight-line backing: You must be able to back the Double/Triple combination vehicle in a straight line for a distance of at least 100 feet.
3. Offset backing: You must be able to back the Double/Triple combination vehicle into a space that is offset from your starting position.
4. Parallel parking: You must be able to park the Double/Triple combination vehicle in a space that is parallel to the curb.
5. Turning: You must demonstrate your ability to safely turn the Double/Triple combination vehicle, including making right turns, left turns, and U-turns.
6. Merging: You must demonstrate your ability to merge onto highways and change lanes safely while operating the Double/Triple combination vehicle.
7. Braking: You must demonstrate your ability to safely control the speed and braking of the Double/Triple combination vehicle.
It is important to practice and prepare for the skills test by reviewing the New Jersey Commercial Driver License Manual and receiving training from a certified truck driving school or your employer. Be sure to follow all safety procedures and instructions provided by the examiner during the test.
1. Pre-trip inspection: You will be required to perform a thorough inspection of your Double/Triple combination vehicle and explain to the examiner what you are checking for and why.
2. Basic control skills: You will be required to demonstrate your ability to control the Double/Triple combination vehicle in a variety of situations, including straight-line backing, offset backing, and parallel parking.
3. On-road driving: You will be required to demonstrate your ability to safely operate the Double/Triple combination vehicle on public roads. You will be evaluated on your ability to complete a variety of driving maneuvers, including turning, merging, and braking.
During the skills test, you must demonstrate the following specific skills or maneuvers:
1. Coupling and uncoupling: You must demonstrate your ability to properly couple and uncouple the Double/Triple combination vehicle.
2. Straight-line backing: You must be able to back the Double/Triple combination vehicle in a straight line for a distance of at least 100 feet.
3. Offset backing: You must be able to back the Double/Triple combination vehicle into a space that is offset from your starting position.
4. Parallel parking: You must be able to park the Double/Triple combination vehicle in a space that is parallel to the curb.
5. Turning: You must demonstrate your ability to safely turn the Double/Triple combination vehicle, including making right turns, left turns, and U-turns.
6. Merging: You must demonstrate your ability to merge onto highways and change lanes safely while operating the Double/Triple combination vehicle.
7. Braking: You must demonstrate your ability to safely control the speed and braking of the Double/Triple combination vehicle.
It is important to practice and prepare for the skills test by reviewing the New Jersey Commercial Driver License Manual and receiving training from a certified truck driving school or your employer. Be sure to follow all safety procedures and instructions provided by the examiner during the test.
No, you cannot operate Double/Triple combination vehicles without a CDL Doubles/Triples endorsement in New Jersey. According to the Federal Motor Carrier Safety Administration (FMCSA), a Doubles/Triples endorsement is required to operate a commercial motor vehicle (CMV) that is designed to tow more than one trailer or semi-trailer.
In order to obtain a CDL Doubles/Triples endorsement, you must pass a written test and a skills test. The written test covers topics such as inspecting Doubles/Triples, coupling and uncoupling, driving Doubles/Triples, and combination vehicle air brakes. The skills test includes a pre-trip inspection, basic control skills, and an on-road driving test.
It is important to note that operating Double/Triple combination vehicles requires additional training and experience compared to operating single trailers. These vehicles have unique handling characteristics and require additional attention to safety procedures.
If you are caught operating a Double/Triple combination vehicle without the proper CDL endorsement, you could face fines and penalties. Additionally, your employer could also face penalties for allowing an unlicensed driver to operate a commercial motor vehicle.
In order to obtain a CDL Doubles/Triples endorsement, you must pass a written test and a skills test. The written test covers topics such as inspecting Doubles/Triples, coupling and uncoupling, driving Doubles/Triples, and combination vehicle air brakes. The skills test includes a pre-trip inspection, basic control skills, and an on-road driving test.
It is important to note that operating Double/Triple combination vehicles requires additional training and experience compared to operating single trailers. These vehicles have unique handling characteristics and require additional attention to safety procedures.
If you are caught operating a Double/Triple combination vehicle without the proper CDL endorsement, you could face fines and penalties. Additionally, your employer could also face penalties for allowing an unlicensed driver to operate a commercial motor vehicle.
You can add the CDL Doubles/Triples endorsement to your existing CDL license in New Jersey by passing the required knowledge and skills tests. You do not need to apply for a new license.
To add the Doubles/Triples endorsement to your CDL, you will need to:
1. Study the Doubles/Triples section of the New Jersey Commercial Driver License Manual.
2. Schedule and pass the Doubles/Triples endorsement knowledge test at a Motor Vehicle Commission (MVC) testing center.
3. Practice driving with a Double/Triple combination vehicle or receive training from a certified truck driving school.
4. Schedule and pass the Doubles/Triples endorsement skills test at a MVC testing center.
Once you have passed both tests, your CDL license will be updated to include the Doubles/Triples endorsement. You will receive a new license that reflects this endorsement.
It is important to note that adding endorsements to your CDL may require additional fees and may impact your insurance rates. Additionally, operating Double/Triple combination vehicles requires additional training and experience compared to operating single trailers. These vehicles have unique handling characteristics and require additional attention to safety procedures.
To add the Doubles/Triples endorsement to your CDL, you will need to:
1. Study the Doubles/Triples section of the New Jersey Commercial Driver License Manual.
2. Schedule and pass the Doubles/Triples endorsement knowledge test at a Motor Vehicle Commission (MVC) testing center.
3. Practice driving with a Double/Triple combination vehicle or receive training from a certified truck driving school.
4. Schedule and pass the Doubles/Triples endorsement skills test at a MVC testing center.
Once you have passed both tests, your CDL license will be updated to include the Doubles/Triples endorsement. You will receive a new license that reflects this endorsement.
It is important to note that adding endorsements to your CDL may require additional fees and may impact your insurance rates. Additionally, operating Double/Triple combination vehicles requires additional training and experience compared to operating single trailers. These vehicles have unique handling characteristics and require additional attention to safety procedures.
Yes, there are restrictions and limitations for drivers with a CDL Doubles/Triples endorsement in New Jersey. The Federal Motor Carrier Safety Administration (FMCSA) has specific regulations that apply to drivers operating Double/Triple combination vehicles.
Some of the restrictions and limitations for drivers with a CDL Doubles/Triples endorsement include:
1. Vehicle weight limits: Double/Triple combination vehicles have specific weight limits that must be followed. The maximum weight for a Double/Triple combination vehicle is 80,000 pounds.
2. Length limits: Double/Triple combination vehicles are longer than single trailers and there are length limits that must be followed. The maximum length for a Double/Triple combination vehicle is 28 feet for each trailer.
3. Special endorsements: In addition to the Doubles/Triples endorsement, some states require additional endorsements for certain types of Double/Triple combination vehicles. For example, tankers or hazardous materials may require additional endorsements.
4. Special driving skills: Operating Double/Triple combination vehicles requires additional driving skills compared to single trailers. Drivers must be able to handle longer and heavier loads, navigate turns and curves, and manage the additional trailers.
5. Additional safety procedures: Drivers of Double/Triple combination vehicles must follow additional safety procedures such as inspecting each trailer, properly coupling and uncoupling trailers, and maintaining proper spacing between other vehicles on the road.
It is important to note that violating any of these restrictions or limitations can result in fines, penalties, or even suspension of your CDL license.
Some of the restrictions and limitations for drivers with a CDL Doubles/Triples endorsement include:
1. Vehicle weight limits: Double/Triple combination vehicles have specific weight limits that must be followed. The maximum weight for a Double/Triple combination vehicle is 80,000 pounds.
2. Length limits: Double/Triple combination vehicles are longer than single trailers and there are length limits that must be followed. The maximum length for a Double/Triple combination vehicle is 28 feet for each trailer.
3. Special endorsements: In addition to the Doubles/Triples endorsement, some states require additional endorsements for certain types of Double/Triple combination vehicles. For example, tankers or hazardous materials may require additional endorsements.
4. Special driving skills: Operating Double/Triple combination vehicles requires additional driving skills compared to single trailers. Drivers must be able to handle longer and heavier loads, navigate turns and curves, and manage the additional trailers.
5. Additional safety procedures: Drivers of Double/Triple combination vehicles must follow additional safety procedures such as inspecting each trailer, properly coupling and uncoupling trailers, and maintaining proper spacing between other vehicles on the road.
It is important to note that violating any of these restrictions or limitations can result in fines, penalties, or even suspension of your CDL license.
The maximum weight and length limits for double/triple trailers with a CDL Doubles/Triples endorsement are regulated by the Federal Motor Carrier Safety Administration (FMCSA) in the United States. In New Jersey, the maximum weight and length limits for Double/Triple combination vehicles are as follows:
1. Maximum Weight: The maximum weight for Double/Triple combination vehicles is 80,000 pounds. This includes the weight of the tractor, trailers, and any cargo being transported.
2. Maximum Length: The maximum length for Double/Triple combination vehicles is 28 feet for each trailer. This means that the total length of the tractor and trailers cannot exceed 84 feet.
It is important to note that these weight and length limits apply to Double/Triple combination vehicles that are operated on interstate highways. If you are operating a Double/Triple combination vehicle solely within the state of New Jersey, there may be different weight and length limits that apply.
Also, it is important to remember that these weight and length limits are just a part of the regulations that govern Double/Triple combination vehicles. Drivers with a CDL Doubles/Triples endorsement must also follow additional safety procedures and regulations when operating these types of vehicles, such as proper inspection and coupling/uncoupling procedures, maintaining proper spacing between other vehicles on the road, and more.
1. Maximum Weight: The maximum weight for Double/Triple combination vehicles is 80,000 pounds. This includes the weight of the tractor, trailers, and any cargo being transported.
2. Maximum Length: The maximum length for Double/Triple combination vehicles is 28 feet for each trailer. This means that the total length of the tractor and trailers cannot exceed 84 feet.
It is important to note that these weight and length limits apply to Double/Triple combination vehicles that are operated on interstate highways. If you are operating a Double/Triple combination vehicle solely within the state of New Jersey, there may be different weight and length limits that apply.
Also, it is important to remember that these weight and length limits are just a part of the regulations that govern Double/Triple combination vehicles. Drivers with a CDL Doubles/Triples endorsement must also follow additional safety procedures and regulations when operating these types of vehicles, such as proper inspection and coupling/uncoupling procedures, maintaining proper spacing between other vehicles on the road, and more.
Yes, there are several specific safety considerations and regulations that drivers with a CDL Doubles/Triples endorsement must follow when driving double/triple trailers. These regulations are put in place to ensure the safety of the driver, other motorists, and pedestrians on the road.
Here are some of the safety considerations and regulations that drivers with a CDL Doubles/Triples endorsement must be aware of when driving double/triple trailers:
1. Proper Inspection: Drivers must perform a thorough inspection of each trailer before starting their trip. This includes checking the tires, brakes, lights, coupling devices, and more.
2. Coupling/Uncoupling Procedures: Drivers must follow proper procedures when coupling and uncoupling trailers to ensure that they are securely connected and free from any defects.
3. Spacing: When driving double/triple trailers, drivers must maintain proper spacing between their vehicle and other vehicles on the road. This is important to ensure that they have enough room to maneuver and stop if necessary.
4. Speed Limits: Speed limits for double/triple trailers may be lower than for single trailers depending on the state and road conditions.
5. Turning Radius: Double/triple trailers have a wider turning radius than single trailers, so drivers must be aware of this when making turns or navigating curves.
6. Braking Distance: The additional weight of double/triple trailers requires a longer braking distance than single trailers. Drivers must be aware of this and leave enough space between their vehicle and other vehicles on the road.
7. Signaling: Drivers must use proper signaling techniques when driving double/triple trailers, including using turn signals well in advance of making a turn or changing lanes.
It is important for drivers with a CDL Doubles/Triples endorsement to follow these safety considerations and regulations to ensure their own safety as well as the safety of others on the road.
Here are some of the safety considerations and regulations that drivers with a CDL Doubles/Triples endorsement must be aware of when driving double/triple trailers:
1. Proper Inspection: Drivers must perform a thorough inspection of each trailer before starting their trip. This includes checking the tires, brakes, lights, coupling devices, and more.
2. Coupling/Uncoupling Procedures: Drivers must follow proper procedures when coupling and uncoupling trailers to ensure that they are securely connected and free from any defects.
3. Spacing: When driving double/triple trailers, drivers must maintain proper spacing between their vehicle and other vehicles on the road. This is important to ensure that they have enough room to maneuver and stop if necessary.
4. Speed Limits: Speed limits for double/triple trailers may be lower than for single trailers depending on the state and road conditions.
5. Turning Radius: Double/triple trailers have a wider turning radius than single trailers, so drivers must be aware of this when making turns or navigating curves.
6. Braking Distance: The additional weight of double/triple trailers requires a longer braking distance than single trailers. Drivers must be aware of this and leave enough space between their vehicle and other vehicles on the road.
7. Signaling: Drivers must use proper signaling techniques when driving double/triple trailers, including using turn signals well in advance of making a turn or changing lanes.
It is important for drivers with a CDL Doubles/Triples endorsement to follow these safety considerations and regulations to ensure their own safety as well as the safety of others on the road.
