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 possible answer choices. Test questions come from the Louisiana Commercial Driver License Manual. Questions come from chapters covering: Transporting Cargo, Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
Number of Question
Passing Score
8. The leading factor resulting in death and injury in work zones is:
Explanation
The leading cause of injury and death in roadway work zones is excessive speed by passing drivers. Lower your speed when driving through a work zone.
9. Which of the following is acceptable if found during a pre-trip inspection?
Explanation
When checking the tires as part of a pre-trip inspection, make sure the tires have sufficient tread. There should be at least 4/32 of an inch of tread in every major groove of the front tires, and at least 2/32 of an inch of tread depth on the other tires. Tire sizes should not be mismatched.
10. Why do large vehicles use air brakes?
Explanation
If used and maintained properly, air brakes are a safe and effective way to stop large, heavy vehicles.
11. Alcohol evaporators are:
Explanation
Some air brake systems include an alcohol evaporator. The evaporator introduces alcohol into the braking system to prevent the formation of ice, which can cause damage.
12. Rust around wheel nuts may mean:
Explanation
Rust around wheel nuts can indicate that the nuts are loose. If you find rust near the wheel nuts, check their tightness before beginning to drive.
13. Mirror adjustment can only be checked properly if:
Explanation
On a vehicle with one or more trailers, mirror adjustment can only be checked accurately if the trailers are straight. Mirror adjustment should be checked before the start of every trip.
14. Before attempting to put out an engine fire:
Explanation
If you experience an engine fire, you should turn off the engine as soon as safely possible. Avoid opening the vehicle's hood when extinguishing the fire.
Frequently Asked Questions
To obtain a CDL Doubles/Triples endorsement in Louisiana, follow these step-by-step instructions:
1. Obtain a Louisiana Commercial Driver's License (CDL) by passing the required knowledge and skills tests.
2. Complete the Louisiana CDL Doubles/Triples Endorsement Application, available at your local Louisiana Office of Motor Vehicles (OMV) or on the OMV website.
3. Study the Louisiana CDL Driver's Handbook and the Louisiana CDL Doubles/Triples Study Guide to prepare for the knowledge test.
4. Schedule an appointment to take the knowledge test at a Louisiana OMV location.
5. Pass the knowledge test by answering at least 80% of the questions correctly.
6. Schedule an appointment to take the skills test for the Doubles/Triples endorsement.
7. Pass the skills test by demonstrating your ability to safely operate a vehicle with double or triple trailers attached.
8. Pay the required fee for the endorsement and receive your new CDL with Doubles/Triples endorsement from your local Louisiana OMV.
It is important to note that in addition to passing the knowledge and skills tests, you must also meet other requirements for obtaining a CDL in Louisiana, including minimum age and driving experience requirements, and passing a medical examination.
1. Obtain a Louisiana Commercial Driver's License (CDL) by passing the required knowledge and skills tests.
2. Complete the Louisiana CDL Doubles/Triples Endorsement Application, available at your local Louisiana Office of Motor Vehicles (OMV) or on the OMV website.
3. Study the Louisiana CDL Driver's Handbook and the Louisiana CDL Doubles/Triples Study Guide to prepare for the knowledge test.
4. Schedule an appointment to take the knowledge test at a Louisiana OMV location.
5. Pass the knowledge test by answering at least 80% of the questions correctly.
6. Schedule an appointment to take the skills test for the Doubles/Triples endorsement.
7. Pass the skills test by demonstrating your ability to safely operate a vehicle with double or triple trailers attached.
8. Pay the required fee for the endorsement and receive your new CDL with Doubles/Triples endorsement from your local Louisiana OMV.
It is important to note that in addition to passing the knowledge and skills tests, you must also meet other requirements for obtaining a CDL in Louisiana, including minimum age and driving experience requirements, and passing a medical examination.
To get a CDL Doubles/Triples license in Louisiana, you must meet the following requirements:
1. Be at least 21 years old: You must be at least 21 years old to operate a commercial vehicle with double or triple trailers in interstate commerce. If you are operating within Louisiana only, you may be eligible to obtain a CDL Doubles/Triples license at the age of 18.
2. Have a valid Louisiana CDL: You must have a valid Louisiana Commercial Driver's License (CDL) before applying for the Doubles/Triples endorsement.
3. Pass the CDL Doubles/Triples knowledge test: You must pass the CDL Doubles/Triples knowledge test to demonstrate your knowledge of the safe operation of commercial vehicles with double or triple trailers.
4. Pass the CDL Doubles/Triples skills test: You must pass the CDL Doubles/Triples skills test to demonstrate your ability to safely operate a commercial vehicle with double or triple trailers.
5. Meet medical requirements: You must meet the medical requirements for operating a commercial vehicle with double or triple trailers, including passing a medical examination and maintaining a valid medical certificate.
6. Have driving experience: You must have at least one year of driving experience with a Class A CDL before applying for the Doubles/Triples endorsement.
7. Pay required fees: You must pay the required fees for obtaining the CDL Doubles/Triples endorsement and any other applicable fees.
It is important to note that additional requirements and restrictions may apply depending on your specific situation, so it is recommended that you review the Louisiana CDL Driver's Handbook and consult with your local Louisiana Office of Motor Vehicles for more information.
1. Be at least 21 years old: You must be at least 21 years old to operate a commercial vehicle with double or triple trailers in interstate commerce. If you are operating within Louisiana only, you may be eligible to obtain a CDL Doubles/Triples license at the age of 18.
2. Have a valid Louisiana CDL: You must have a valid Louisiana Commercial Driver's License (CDL) before applying for the Doubles/Triples endorsement.
3. Pass the CDL Doubles/Triples knowledge test: You must pass the CDL Doubles/Triples knowledge test to demonstrate your knowledge of the safe operation of commercial vehicles with double or triple trailers.
4. Pass the CDL Doubles/Triples skills test: You must pass the CDL Doubles/Triples skills test to demonstrate your ability to safely operate a commercial vehicle with double or triple trailers.
5. Meet medical requirements: You must meet the medical requirements for operating a commercial vehicle with double or triple trailers, including passing a medical examination and maintaining a valid medical certificate.
6. Have driving experience: You must have at least one year of driving experience with a Class A CDL before applying for the Doubles/Triples endorsement.
7. Pay required fees: You must pay the required fees for obtaining the CDL Doubles/Triples endorsement and any other applicable fees.
It is important to note that additional requirements and restrictions may apply depending on your specific situation, so it is recommended that you review the Louisiana CDL Driver's Handbook and consult with your local Louisiana Office of Motor Vehicles for more information.
Yes, you need specific experience and training to obtain a CDL Doubles/Triples endorsement in Louisiana. According to Louisiana law, you must have at least one year of driving experience with a Class A CDL before applying for the Doubles/Triples endorsement. This experience must be obtained while operating a single tractor-trailer combination.
In addition to having the required driving experience, it is recommended that you receive training specifically for operating commercial vehicles with double or triple trailers. This training can help you become more familiar with the unique challenges of operating longer and heavier vehicles, including navigating turns, backing up, and maintaining proper braking distance.
You may choose to receive this training through a commercial driving school or through an employer-sponsored training program. Some employers may also require additional training before allowing drivers to operate double or triple trailers.
It is important to note that receiving training is not a requirement of Louisiana law for obtaining the Doubles/Triples endorsement, but it can help you become a safer and more confident driver and increase your chances of passing the required knowledge and skills tests.
In addition to having the required driving experience, it is recommended that you receive training specifically for operating commercial vehicles with double or triple trailers. This training can help you become more familiar with the unique challenges of operating longer and heavier vehicles, including navigating turns, backing up, and maintaining proper braking distance.
You may choose to receive this training through a commercial driving school or through an employer-sponsored training program. Some employers may also require additional training before allowing drivers to operate double or triple trailers.
It is important to note that receiving training is not a requirement of Louisiana law for obtaining the Doubles/Triples endorsement, but it can help you become a safer and more confident driver and increase your chances of passing the required knowledge and skills tests.
Yes, there is an additional written test that you must pass to obtain the CDL Doubles/Triples endorsement in Louisiana. You must pass the Doubles/Triples endorsement knowledge test, which covers topics such as:
1. Understanding the additional risks and handling characteristics of double and triple trailer combinations.
2. Properly coupling and uncoupling double and triple trailers.
3. Understanding the laws and regulations governing the operation of double and triple trailers.
4. Maintaining proper control of a double or triple trailer combination.
5. Preventing rollovers and jackknifes.
You can study for this test using the Louisiana CDL Driver's Handbook, which includes a section specifically on the Doubles/Triples endorsement. It is important to take the time to thoroughly study and understand these topics before taking the exam.
In addition to passing the Doubles/Triples endorsement knowledge test, you must also pass a skills test that includes a pre-trip inspection and an on-road driving test with a double or triple trailer combination. The skills test will assess your ability to safely operate a commercial vehicle with double or triple trailers, including backing up, turning, and maintaining proper following distance.
Overall, obtaining a CDL Doubles/Triples endorsement requires both knowledge and skills testing in addition to meeting specific experience and training requirements.
1. Understanding the additional risks and handling characteristics of double and triple trailer combinations.
2. Properly coupling and uncoupling double and triple trailers.
3. Understanding the laws and regulations governing the operation of double and triple trailers.
4. Maintaining proper control of a double or triple trailer combination.
5. Preventing rollovers and jackknifes.
You can study for this test using the Louisiana CDL Driver's Handbook, which includes a section specifically on the Doubles/Triples endorsement. It is important to take the time to thoroughly study and understand these topics before taking the exam.
In addition to passing the Doubles/Triples endorsement knowledge test, you must also pass a skills test that includes a pre-trip inspection and an on-road driving test with a double or triple trailer combination. The skills test will assess your ability to safely operate a commercial vehicle with double or triple trailers, including backing up, turning, and maintaining proper following distance.
Overall, obtaining a CDL Doubles/Triples endorsement requires both knowledge and skills testing in addition to meeting specific experience and training requirements.
During the CDL Doubles/Triples endorsement test in Louisiana, you will need to demonstrate specific skills and maneuvers to show that you can safely operate a commercial vehicle with double or triple trailers. The skills test includes a pre-trip inspection and an on-road driving test.
The pre-trip inspection will assess your ability to inspect the double or triple trailer combination and identify any potential safety hazards. You will need to demonstrate that you are able to properly inspect the coupling mechanisms, electrical connections, brakes, tires, and other components.
The on-road driving test will assess your ability to safely operate the double or triple trailer combination on public roads. You will need to demonstrate the following skills and maneuvers:
1. Properly coupling and uncoupling the double or triple trailer combination.
2. Driving through a curve while maintaining proper lane position and speed control.
3. Making turns while maintaining proper lane position and signaling.
4. Backing up in a straight line and around a corner.
5. Maintaining proper following distance behind other vehicles.
6. Stopping smoothly and in a controlled manner.
7. Identifying potential hazards on the road and reacting appropriately.
It is important to practice these skills and maneuvers before taking the CDL Doubles/Triples endorsement test. You can do this through a commercial driving school or an employer-sponsored training program. Practicing with an experienced CDL driver can also be helpful in preparing for the test.
Remember to always prioritize safety during the test and while operating a commercial vehicle with double or triple trailers on public roads.
The pre-trip inspection will assess your ability to inspect the double or triple trailer combination and identify any potential safety hazards. You will need to demonstrate that you are able to properly inspect the coupling mechanisms, electrical connections, brakes, tires, and other components.
The on-road driving test will assess your ability to safely operate the double or triple trailer combination on public roads. You will need to demonstrate the following skills and maneuvers:
1. Properly coupling and uncoupling the double or triple trailer combination.
2. Driving through a curve while maintaining proper lane position and speed control.
3. Making turns while maintaining proper lane position and signaling.
4. Backing up in a straight line and around a corner.
5. Maintaining proper following distance behind other vehicles.
6. Stopping smoothly and in a controlled manner.
7. Identifying potential hazards on the road and reacting appropriately.
It is important to practice these skills and maneuvers before taking the CDL Doubles/Triples endorsement test. You can do this through a commercial driving school or an employer-sponsored training program. Practicing with an experienced CDL driver can also be helpful in preparing for the test.
Remember to always prioritize safety during the test and while operating a commercial vehicle with double or triple trailers on public roads.
No, you cannot operate a commercial vehicle with double or triple trailers without a CDL Doubles/Triples endorsement in Louisiana. The Doubles/Triples endorsement is required by federal law for drivers who operate commercial vehicles with double or triple trailers.
To obtain the Doubles/Triples endorsement, you must pass both a written knowledge test and a skills test that specifically assesses your ability to safely operate a commercial vehicle with double or triple trailers.
If you are caught operating a commercial vehicle with double or triple trailers without the proper endorsement, you may face fines, penalties, and even the suspension or revocation of your CDL. In addition, operating a commercial vehicle without the proper training and endorsement can be dangerous to yourself and others on the road.
It is important to obtain the proper training and endorsements before operating any type of commercial vehicle to ensure safety and compliance with federal and state regulations.
To obtain the Doubles/Triples endorsement, you must pass both a written knowledge test and a skills test that specifically assesses your ability to safely operate a commercial vehicle with double or triple trailers.
If you are caught operating a commercial vehicle with double or triple trailers without the proper endorsement, you may face fines, penalties, and even the suspension or revocation of your CDL. In addition, operating a commercial vehicle without the proper training and endorsement can be dangerous to yourself and others on the road.
It is important to obtain the proper training and endorsements before operating any type of commercial vehicle to ensure safety and compliance with federal and state regulations.
In Louisiana, you can add the CDL Doubles/Triples endorsement to your existing CDL license by passing the required written knowledge test and skills test. You do not need to apply for a new CDL license.
To add the Doubles/Triples endorsement to your CDL license, you must first study the Louisiana Commercial Driver's License Manual and pass a written knowledge test specific to Doubles/Triples. Once you have passed the written test, you will need to take a skills test that specifically assesses your ability to safely operate a commercial vehicle with double or triple trailers.
If you pass both tests, the Louisiana Office of Motor Vehicles (OMV) will add the Doubles/Triples endorsement to your existing CDL license.
It is important to note that adding a new endorsement to your CDL license may come with additional fees. You should contact the Louisiana OMV for specific information on fees and requirements for adding endorsements to your CDL license.
To add the Doubles/Triples endorsement to your CDL license, you must first study the Louisiana Commercial Driver's License Manual and pass a written knowledge test specific to Doubles/Triples. Once you have passed the written test, you will need to take a skills test that specifically assesses your ability to safely operate a commercial vehicle with double or triple trailers.
If you pass both tests, the Louisiana Office of Motor Vehicles (OMV) will add the Doubles/Triples endorsement to your existing CDL license.
It is important to note that adding a new endorsement to your CDL license may come with additional fees. You should contact the Louisiana OMV for specific information on fees and requirements for adding endorsements to your CDL license.
Yes, there are restrictions and limitations for drivers with a CDL Doubles/Triples endorsement in Louisiana.
Firstly, you must have the Doubles/Triples endorsement on your CDL license in order to operate a commercial vehicle with double or triple trailers.
Secondly, there are specific weight limits that must be followed when operating a commercial vehicle with double or triple trailers. In Louisiana, the maximum weight of the vehicle and trailer(s) combined cannot exceed 80,000 pounds. However, there may be other weight restrictions based on the type of trailer(s) being used.
Thirdly, drivers with a Doubles/Triples endorsement are required to have specialized knowledge and skills related to operating commercial vehicles with double or triple trailers. This includes knowledge of proper weight distribution, turning radius, and braking distance, among other things.
Finally, it is important to note that not all states allow commercial vehicles with double or triple trailers on their roads. If you are traveling outside of Louisiana with a commercial vehicle that has double or triple trailers, you should check the regulations in each state you will be driving through to ensure compliance with their laws.
Overall, it is essential that drivers with a CDL Doubles/Triples endorsement follow all applicable laws and regulations to ensure safety on the road.
Firstly, you must have the Doubles/Triples endorsement on your CDL license in order to operate a commercial vehicle with double or triple trailers.
Secondly, there are specific weight limits that must be followed when operating a commercial vehicle with double or triple trailers. In Louisiana, the maximum weight of the vehicle and trailer(s) combined cannot exceed 80,000 pounds. However, there may be other weight restrictions based on the type of trailer(s) being used.
Thirdly, drivers with a Doubles/Triples endorsement are required to have specialized knowledge and skills related to operating commercial vehicles with double or triple trailers. This includes knowledge of proper weight distribution, turning radius, and braking distance, among other things.
Finally, it is important to note that not all states allow commercial vehicles with double or triple trailers on their roads. If you are traveling outside of Louisiana with a commercial vehicle that has double or triple trailers, you should check the regulations in each state you will be driving through to ensure compliance with their laws.
Overall, it is essential that drivers with a CDL Doubles/Triples endorsement follow all applicable laws and regulations to ensure safety on the road.
In Louisiana, the maximum weight and length limits for double/triple trailers with a CDL Doubles/Triples endorsement are as follows:
- The maximum length of a double trailer (combination of two trailers) is 28 feet each (total of 56 feet).
- The maximum length of a triple trailer (combination of three trailers) is 28 feet each (total of 84 feet).
- The maximum weight of the vehicle and trailer(s) combined cannot exceed 80,000 pounds.
- The maximum weight on any individual axle cannot exceed 20,000 pounds.
It is important to note that these weight and length limits apply specifically to Louisiana, and other states may have different regulations. If you are traveling outside of Louisiana with a commercial vehicle that has double or triple trailers, you should check the regulations in each state you will be driving through to ensure compliance with their laws.
- The maximum length of a double trailer (combination of two trailers) is 28 feet each (total of 56 feet).
- The maximum length of a triple trailer (combination of three trailers) is 28 feet each (total of 84 feet).
- The maximum weight of the vehicle and trailer(s) combined cannot exceed 80,000 pounds.
- The maximum weight on any individual axle cannot exceed 20,000 pounds.
It is important to note that these weight and length limits apply specifically to Louisiana, and other states may have different regulations. If you are traveling outside of Louisiana with a commercial vehicle that has double or triple trailers, you should check the regulations in each state you will be driving through to ensure compliance with their laws.
Yes, there are specific safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement in Louisiana. Here are a few important ones:
1. Weight Distribution: Proper weight distribution is essential for safe operation of double/triple trailers. The weight must be distributed evenly across all axles of both the tractor and trailer(s). Overloading one axle or trailer can cause the vehicle to become unstable and increase the risk of rollover accidents.
2. Turning Radius: Double/triple trailers require a wider turning radius than single trailers. Drivers must be aware of their vehicle's size and make wider turns to avoid colliding with other vehicles, curbs, or signs.
3. Braking Distance: The braking distance for double/triple trailers is longer than that of single trailers. Drivers must increase their following distance to allow for extra stopping time and avoid rear-end collisions.
4. Speed Limits: Some states may have lower speed limits for commercial vehicles with double/triple trailers due to their size and weight. It is important for drivers to be aware of these limits and follow them to ensure safe operation of their vehicle.
5. Specialized Skills: Drivers with a CDL Doubles/Triples endorsement are required to have specialized knowledge and skills related to operating commercial vehicles with double/triple trailers. This includes knowledge of proper weight distribution, turning radius, braking distance, and more.
Overall, it is essential for drivers with a CDL Doubles/Triples endorsement to follow all applicable laws and regulations and exercise caution when operating their vehicle to ensure safety on the road.
1. Weight Distribution: Proper weight distribution is essential for safe operation of double/triple trailers. The weight must be distributed evenly across all axles of both the tractor and trailer(s). Overloading one axle or trailer can cause the vehicle to become unstable and increase the risk of rollover accidents.
2. Turning Radius: Double/triple trailers require a wider turning radius than single trailers. Drivers must be aware of their vehicle's size and make wider turns to avoid colliding with other vehicles, curbs, or signs.
3. Braking Distance: The braking distance for double/triple trailers is longer than that of single trailers. Drivers must increase their following distance to allow for extra stopping time and avoid rear-end collisions.
4. Speed Limits: Some states may have lower speed limits for commercial vehicles with double/triple trailers due to their size and weight. It is important for drivers to be aware of these limits and follow them to ensure safe operation of their vehicle.
5. Specialized Skills: Drivers with a CDL Doubles/Triples endorsement are required to have specialized knowledge and skills related to operating commercial vehicles with double/triple trailers. This includes knowledge of proper weight distribution, turning radius, braking distance, and more.
Overall, it is essential for drivers with a CDL Doubles/Triples endorsement to follow all applicable laws and regulations and exercise caution when operating their vehicle to ensure safety on the road.
