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 two, three or four possible answer choices. Test questions come from the Nebraska 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
8. While inspecting coupling equipment before a trip, the air lines should not:
Explanation
When inspecting the convertor dolly, ensure that all components are present and in proper working condition. Be sure to check the upper and lower fifth wheel, the air lines, and the electric lines. The air lines should be securely attached to the proper glad hands and should not contain any leaks. They should be attached with enough slack to allow easy turning.
9. What is a concern immediately after it begins raining?
Explanation
Under wet conditions, roads are often most slippery when it first begins to rain. This is because the water mixes with oil and grease on the road that has not yet begun to wash away.
10. Talking on a hands-free phone while driving:
Explanation
While speaking on a hands-free phone while driving is less dangerous than speaking on a hand-held phone, it is just as likely to mentally distract a driver. Simply engaging in conversation takes their mental focus away from the task of driving.
11. If you don't pull a dolly out from beneath the rear trailer before unlocking the pintle hook:
Explanation
Never unlock the pintle hook with the dolly still under the rear trailer. This could cause the dolly tow bar to fly up, possibly causing serious injury.
12. Front brake limiting valves were intended to:
Explanation
Some older vehicles with air brakes have front brake limiting valves. These valves were intended to reduce the risk of front wheels skidding. However, research has shown that such devices are unnecessary, so they should be left in the "normal" position.
13. Which of the following types of vehicles is most prone to the “crack-the-whip" effect?
Explanation
Double and triple combinations are the most vulnerable to turning over as a result of the "crack-the-whip" effect.
14. 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.
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Frequently Asked Questions
To obtain a CDL Doubles/Triples endorsement in Nebraska, you will need to follow these steps:
1. Obtain a Nebraska commercial driver's license (CDL) or have a valid CDL from another state.
2. Review the Nebraska Commercial Driver's License Manual to study the rules and regulations for operating double or triple trailers.
3. Schedule an appointment at your local Department of Motor Vehicles (DMV) office to apply for the endorsement. You can do this online or by calling the DMV customer service center at (402) 471-3861.
4. Bring your valid CDL and the necessary documents, including a medical certificate, proof of citizenship or legal presence, and proof of Nebraska residency.
5. Pay the fee for the endorsement and take the written test. The test will cover topics such as coupling and uncoupling, inspecting double/triple trailers, and driving techniques.
6. Pass the written test with a score of at least 80%.
7. Schedule a skills test with an approved third-party tester.
8. Pass the skills test, which will include a pre-trip inspection, basic control skills test, and an on-road driving test.
9. Once you pass the skills test, your new CDL with Doubles/Triples endorsement will be issued by the DMV.
It is important to note that CDL holders must renew their endorsements every five years by passing another written test and paying the fee for the endorsement renewal.
1. Obtain a Nebraska commercial driver's license (CDL) or have a valid CDL from another state.
2. Review the Nebraska Commercial Driver's License Manual to study the rules and regulations for operating double or triple trailers.
3. Schedule an appointment at your local Department of Motor Vehicles (DMV) office to apply for the endorsement. You can do this online or by calling the DMV customer service center at (402) 471-3861.
4. Bring your valid CDL and the necessary documents, including a medical certificate, proof of citizenship or legal presence, and proof of Nebraska residency.
5. Pay the fee for the endorsement and take the written test. The test will cover topics such as coupling and uncoupling, inspecting double/triple trailers, and driving techniques.
6. Pass the written test with a score of at least 80%.
7. Schedule a skills test with an approved third-party tester.
8. Pass the skills test, which will include a pre-trip inspection, basic control skills test, and an on-road driving test.
9. Once you pass the skills test, your new CDL with Doubles/Triples endorsement will be issued by the DMV.
It is important to note that CDL holders must renew their endorsements every five years by passing another written test and paying the fee for the endorsement renewal.
To obtain a CDL Doubles/Triples license in Nebraska, you must meet the following requirements:
1. Be at least 18 years old. However, you must be at least 21 years old to operate a commercial vehicle across state lines or hazardous materials.
2. Hold a valid Nebraska commercial driver's license (CDL).
3. Pass a written test that covers topics such as inspection, coupling and uncoupling, and driving techniques related to operating double or triple trailers.
4. Pass a skills test that includes a pre-trip inspection, basic control skills test, and an on-road driving test while operating double or triple trailers.
5. Have a valid medical certificate that meets Federal Motor Carrier Safety Administration (FMCSA) standards.
6. Provide proof of citizenship or legal presence in the United States.
7. Pass a background check and provide proof of Nebraska residency.
Note that you may also be required to meet additional state-specific requirements depending on the type of cargo you intend to transport, such as hazardous materials or oversized loads. It is recommended that you review the Nebraska Commercial Driver's License Manual and contact the Nebraska Department of Motor Vehicles for more information on specific requirements for obtaining a CDL Doubles/Triples license.
1. Be at least 18 years old. However, you must be at least 21 years old to operate a commercial vehicle across state lines or hazardous materials.
2. Hold a valid Nebraska commercial driver's license (CDL).
3. Pass a written test that covers topics such as inspection, coupling and uncoupling, and driving techniques related to operating double or triple trailers.
4. Pass a skills test that includes a pre-trip inspection, basic control skills test, and an on-road driving test while operating double or triple trailers.
5. Have a valid medical certificate that meets Federal Motor Carrier Safety Administration (FMCSA) standards.
6. Provide proof of citizenship or legal presence in the United States.
7. Pass a background check and provide proof of Nebraska residency.
Note that you may also be required to meet additional state-specific requirements depending on the type of cargo you intend to transport, such as hazardous materials or oversized loads. It is recommended that you review the Nebraska Commercial Driver's License Manual and contact the Nebraska Department of Motor Vehicles for more information on specific requirements for obtaining a CDL Doubles/Triples license.
Yes, you need specific experience and training to obtain a CDL Doubles/Triples endorsement in Nebraska.
Before you can take the skills test, you are required to complete specific training and demonstrate your ability to safely operate a double or triple trailer. This includes passing a pre-trip inspection, basic control skills test, and an on-road driving test while operating double or triple trailers.
It is recommended that you complete a training course that covers the knowledge and skills necessary to operate double or triple trailers safely. Additionally, some employers may require their drivers to have completed a specific training program before they can operate double or triple trailers.
It is important to note that Nebraska law requires all CDL drivers to complete regular continuing education and training on an ongoing basis. This ensures that CDL holders stay up-to-date with new regulations and safety procedures.
Before you can take the skills test, you are required to complete specific training and demonstrate your ability to safely operate a double or triple trailer. This includes passing a pre-trip inspection, basic control skills test, and an on-road driving test while operating double or triple trailers.
It is recommended that you complete a training course that covers the knowledge and skills necessary to operate double or triple trailers safely. Additionally, some employers may require their drivers to have completed a specific training program before they can operate double or triple trailers.
It is important to note that Nebraska law requires all CDL drivers to complete regular continuing education and training on an ongoing basis. This ensures that CDL holders stay up-to-date with new regulations and safety procedures.
Yes, there is an additional written test that you need to pass to obtain a CDL Doubles/Triples endorsement in Nebraska.
The written test for the Doubles/Triples endorsement covers topics related to the safe operation of double or triple trailers, such as:
- Inspecting double/triple trailers
- Coupling and uncoupling
- Checking air brakes
- Driving with double/triple trailers
- Anticipating and handling problems
This test is in addition to the general knowledge test that is required for all CDL applicants. You must pass both tests to obtain a CDL Doubles/Triples endorsement.
It is recommended that you study the Nebraska Commercial Driver's License Manual and take practice tests before taking the written exam. This will help you prepare for the test and ensure that you have a good understanding of the topics covered.
The written test for the Doubles/Triples endorsement covers topics related to the safe operation of double or triple trailers, such as:
- Inspecting double/triple trailers
- Coupling and uncoupling
- Checking air brakes
- Driving with double/triple trailers
- Anticipating and handling problems
This test is in addition to the general knowledge test that is required for all CDL applicants. You must pass both tests to obtain a CDL Doubles/Triples endorsement.
It is recommended that you study the Nebraska Commercial Driver's License Manual and take practice tests before taking the written exam. This will help you prepare for the test and ensure that you have a good understanding of the topics covered.
To obtain a CDL Doubles/Triples endorsement in Nebraska, you will need to demonstrate specific skills and maneuvers during the skills test. These skills and maneuvers are designed to ensure that you are capable of safely operating a double or triple trailer on the road. They include:
1. Pre-trip inspection: You will need to demonstrate that you can inspect the double or triple trailer to ensure that it is in proper working order before starting your trip.
2. Basic control skills: You will need to demonstrate that you can safely maneuver the double or triple trailer in a variety of situations, such as backing up, turning, and parking.
3. On-road driving: You will need to demonstrate that you can safely operate the double or triple trailer on public roads, including merging, changing lanes, and passing other vehicles.
4. Coupling and uncoupling: You will need to demonstrate that you can safely couple and uncouple the double or triple trailers.
5. Emergency maneuvers: You may also be asked to demonstrate your ability to perform emergency maneuvers, such as sudden stops or swerves.
During the test, the examiner will be looking for your ability to operate the vehicle safely and effectively. It is important to follow all traffic laws and safety guidelines during the test.
1. Pre-trip inspection: You will need to demonstrate that you can inspect the double or triple trailer to ensure that it is in proper working order before starting your trip.
2. Basic control skills: You will need to demonstrate that you can safely maneuver the double or triple trailer in a variety of situations, such as backing up, turning, and parking.
3. On-road driving: You will need to demonstrate that you can safely operate the double or triple trailer on public roads, including merging, changing lanes, and passing other vehicles.
4. Coupling and uncoupling: You will need to demonstrate that you can safely couple and uncouple the double or triple trailers.
5. Emergency maneuvers: You may also be asked to demonstrate your ability to perform emergency maneuvers, such as sudden stops or swerves.
During the test, the examiner will be looking for your ability to operate the vehicle safely and effectively. It is important to follow all traffic laws and safety guidelines during the test.
No, you cannot operate double/triple trailers without a CDL Doubles/Triples endorsement. In Nebraska, you need a Commercial Driver's License (CDL) with the appropriate endorsements to operate certain types of commercial motor vehicles (CMVs), including double/triple trailers.
The Federal Motor Carrier Safety Administration (FMCSA) requires drivers to obtain a CDL Doubles/Triples endorsement if they want to operate double/triple trailers. This endorsement requires passing an additional written exam and a skills test that specifically covers the safe operation of double/triple trailers.
If you are caught operating a double/triple trailer without the required endorsement on your CDL, you may face fines, penalties, and even suspension of your CDL. In addition, operating a CMV without the proper training and endorsements can be dangerous and put yourself and others on the road at risk.
The Federal Motor Carrier Safety Administration (FMCSA) requires drivers to obtain a CDL Doubles/Triples endorsement if they want to operate double/triple trailers. This endorsement requires passing an additional written exam and a skills test that specifically covers the safe operation of double/triple trailers.
If you are caught operating a double/triple trailer without the required endorsement on your CDL, you may face fines, penalties, and even suspension of your CDL. In addition, operating a CMV without the proper training and endorsements can be dangerous and put yourself and others on the road at risk.
Yes, you can add the CDL Doubles/Triples endorsement to your existing CDL license. In Nebraska, you can apply for a CDL Doubles/Triples endorsement at any time after obtaining your initial CDL license. You will need to pass the appropriate written exam and a skills test that specifically covers the safe operation of double/triple trailers.
To add the endorsement to your CDL license, you will need to visit a Nebraska Department of Motor Vehicles (DMV) office and provide the necessary documentation, such as your current CDL license and proof of passing the required exams. You will also need to pay a fee for the endorsement.
It is important to note that adding a new endorsement to your CDL license may require additional training or certification. For example, if you are adding the Doubles/Triples endorsement, you may need additional training on how to safely operate a double/triple trailer. It is important to check with your employer or a training school for any additional requirements before applying for the endorsement.
To add the endorsement to your CDL license, you will need to visit a Nebraska Department of Motor Vehicles (DMV) office and provide the necessary documentation, such as your current CDL license and proof of passing the required exams. You will also need to pay a fee for the endorsement.
It is important to note that adding a new endorsement to your CDL license may require additional training or certification. For example, if you are adding the Doubles/Triples endorsement, you may need additional training on how to safely operate a double/triple trailer. It is important to check with your employer or a training school for any additional requirements before applying for the endorsement.
Yes, there are restrictions and limitations for drivers with a CDL Doubles/Triples endorsement in Nebraska. The Federal Motor Carrier Safety Administration (FMCSA) has established specific rules and regulations for drivers operating double/triple trailers, including:
1. Weight Limitations: Double/triple trailers are subject to weight limitations, and drivers must adhere to these limits to ensure safe operation of the vehicle.
2. Length Limitations: Double/triple trailers are also subject to length limitations, with the maximum length of a double trailer being 28 feet for each trailer and a maximum length of 53 feet for triple trailers.
3. Turning Radius: Double/triple trailers have a wider turning radius than standard commercial vehicles, and drivers must be aware of this when making turns.
4. Braking System: Double/triple trailers require a specific type of braking system that allows all trailers to be stopped simultaneously. Drivers must be trained on the proper use of the braking system.
5. Special Endorsement: Drivers with a CDL Doubles/Triples endorsement are only authorized to operate double/triple trailers; they cannot operate any other type of commercial vehicle without the appropriate endorsement.
It is important for drivers with a CDL Doubles/Triples endorsement to be aware of these restrictions and limitations and adhere to them at all times to ensure safe operation of their vehicle.
1. Weight Limitations: Double/triple trailers are subject to weight limitations, and drivers must adhere to these limits to ensure safe operation of the vehicle.
2. Length Limitations: Double/triple trailers are also subject to length limitations, with the maximum length of a double trailer being 28 feet for each trailer and a maximum length of 53 feet for triple trailers.
3. Turning Radius: Double/triple trailers have a wider turning radius than standard commercial vehicles, and drivers must be aware of this when making turns.
4. Braking System: Double/triple trailers require a specific type of braking system that allows all trailers to be stopped simultaneously. Drivers must be trained on the proper use of the braking system.
5. Special Endorsement: Drivers with a CDL Doubles/Triples endorsement are only authorized to operate double/triple trailers; they cannot operate any other type of commercial vehicle without the appropriate endorsement.
It is important for drivers with a CDL Doubles/Triples endorsement to be aware of these restrictions and limitations and adhere to them at all times to ensure safe operation of their vehicle.
In Nebraska, the maximum weight and length limits for double/triple trailers with a CDL Doubles/Triples endorsement are as follows:
1. Weight Limitations: The maximum gross weight for a double trailer is 80,000 pounds (36,287 kg), with no more than 34,000 pounds (15,422 kg) on the rear trailer and no more than 46,000 pounds (20,865 kg) on the front trailer. The maximum gross weight for a triple trailer is 120,000 pounds (54,431 kg), with no more than 34,000 pounds (15,422 kg) on each of the rear trailers and no more than 52,000 pounds (23,587 kg) on the front trailer.
2. Length Limitations: The maximum length for a double trailer is 28 feet (8.5 meters) for each trailer, making a total of 56 feet (17 meters) for both trailers. The maximum length for a triple trailer is 53 feet (16 meters) for all three trailers combined.
It is important to note that these weight and length limits may vary depending on the state or jurisdiction where you are operating your vehicle. It is your responsibility as a driver to be aware of any weight and length limitations in the areas where you will be driving.
1. Weight Limitations: The maximum gross weight for a double trailer is 80,000 pounds (36,287 kg), with no more than 34,000 pounds (15,422 kg) on the rear trailer and no more than 46,000 pounds (20,865 kg) on the front trailer. The maximum gross weight for a triple trailer is 120,000 pounds (54,431 kg), with no more than 34,000 pounds (15,422 kg) on each of the rear trailers and no more than 52,000 pounds (23,587 kg) on the front trailer.
2. Length Limitations: The maximum length for a double trailer is 28 feet (8.5 meters) for each trailer, making a total of 56 feet (17 meters) for both trailers. The maximum length for a triple trailer is 53 feet (16 meters) for all three trailers combined.
It is important to note that these weight and length limits may vary depending on the state or jurisdiction where you are operating your vehicle. It is your responsibility as a driver to be aware of any weight and length limitations in the areas where you will be driving.
Yes, there are specific safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement in Nebraska. These regulations are in place to ensure the safety of the driver and other road users. Some of the safety considerations and regulations include:
1. Proper Loading: Drivers must ensure that their double/triple trailers are properly loaded and that the weight is distributed evenly across all trailers.
2. Braking System: Double/triple trailers require a specific type of braking system that allows all trailers to be stopped simultaneously. Drivers must be trained on the proper use of the braking system.
3. Turning Radius: Double/triple trailers have a wider turning radius than standard commercial vehicles, and drivers must be aware of this when making turns.
4. Signal Lights: All trailers must have functioning signal lights, including brake lights, turn signals, and hazard lights.
5. Speed Limitations: Drivers must adhere to posted speed limits and adjust their speed according to road conditions, such as weather, traffic, and terrain.
6. Following Distance: Drivers must maintain a safe following distance from other vehicles on the road to allow for proper braking and maneuvering.
7. Special Endorsement: Drivers with a CDL Doubles/Triples endorsement are only authorized to operate double/triple trailers; they cannot operate any other type of commercial vehicle without the appropriate endorsement.
It is important for drivers with a CDL Doubles/Triples endorsement to be aware of these safety considerations and regulations and adhere to them at all times to ensure safe operation of their vehicle.
1. Proper Loading: Drivers must ensure that their double/triple trailers are properly loaded and that the weight is distributed evenly across all trailers.
2. Braking System: Double/triple trailers require a specific type of braking system that allows all trailers to be stopped simultaneously. Drivers must be trained on the proper use of the braking system.
3. Turning Radius: Double/triple trailers have a wider turning radius than standard commercial vehicles, and drivers must be aware of this when making turns.
4. Signal Lights: All trailers must have functioning signal lights, including brake lights, turn signals, and hazard lights.
5. Speed Limitations: Drivers must adhere to posted speed limits and adjust their speed according to road conditions, such as weather, traffic, and terrain.
6. Following Distance: Drivers must maintain a safe following distance from other vehicles on the road to allow for proper braking and maneuvering.
7. Special Endorsement: Drivers with a CDL Doubles/Triples endorsement are only authorized to operate double/triple trailers; they cannot operate any other type of commercial vehicle without the appropriate endorsement.
It is important for drivers with a CDL Doubles/Triples endorsement to be aware of these safety considerations and regulations and adhere to them at all times to ensure safe operation of their vehicle.
