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.. Read More

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 Wyoming Driver License Manual for Commercial and Heavy Vehicles. 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. Both systems in a dual air brake systems share:

Explanation
Both systems in a dual air brake system share a single air compressor. If the air compressor is damaged, neither system will be able to operate properly.

9. Combination vehicles are usually:

Explanation
Driving combination vehicles requires more skill than driving single commercial vehicles. Combinations are generally longer, generally heavier, and are more vulnerable to rollover.

10. Driving a combination vehicle ____ than driving a single vehicle.

Explanation
Driving a combination vehicle usually requires more skill than driving a single vehicle. Combination vehicles are generally longer and heavier than single commercial vehicles.

11. Which of the following is not a part of an air brake system?

Explanation
Air brakes consists of three separate braking systems: the service brake system, the parking brake system, and the emergency brake system.

12. When checking your vehicle's lights before driving:

Explanation
To check your vehicle's lights before a trip, you should set the parking brake, turn off the engine, remove the key from the ignition, and take the key with you. Turn on your low beam headlights and four-way flashers. Get out of the vehicle to make sure the lights are working properly.

13. Hydraulic brakes can fail for one of two reasons. Which of the following is one of those reasons?

Explanation
Most hydraulic brake failures occur for one of two reasons. A first likely cause of brake failure is that the brakes have been overused on a downgrade, causing them to fade. The second likely cause is that there has been a loss of hydraulic pressure in the braking system. Brakes kept in good condition will rarely fail, but you should know which steps to take in case they do.

14. If the safety relief valve in the air brake system releases air:

Explanation
An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.

Frequently Asked Questions

To obtain a CDL Doubles/Triples endorsement in Wyoming, you must follow these steps:

1. Obtain a Wyoming commercial driver's license (CDL) by passing the required knowledge and skills tests.

2. Complete a CDL Doubles/Triples endorsement application, which can be found on the Wyoming Department of Transportation (WYDOT) website.

3. Pay the required fee for the endorsement application.

4. Pass the Doubles/Triples knowledge test, which covers information on coupling and uncoupling, inspecting doubles/triples, and safe driving practices for doubles/triples.

5. Schedule and pass a skills test in a vehicle with doubles/triples, which will assess your ability to safely control and maneuver the vehicle.

6. Upon passing both the knowledge and skills tests, you will receive your CDL Doubles/Triples endorsement.

It is important to note that before obtaining a Doubles/Triples endorsement, you must have a valid Class A CDL license. Additionally, you must be at least 21 years old to operate a commercial vehicle with a Doubles/Triples endorsement.

To obtain a CDL Doubles/Triples license in Wyoming, 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 a Doubles/Triples endorsement.

2. Hold a valid Class A CDL license: To obtain a Doubles/Triples endorsement, you must already have a valid Class A CDL license.

3. Pass the Doubles/Triples knowledge test: You must pass the Doubles/Triples knowledge test, which covers information on coupling and uncoupling, inspecting doubles/triples, and safe driving practices for doubles/triples.

4. Pass a skills test: You must pass a skills test in a vehicle with doubles/triples, which will assess your ability to safely control and maneuver the vehicle.

5. Submit an application and pay the required fee: You must complete a Doubles/Triples endorsement application and pay the required fee.

It is important to note that additional requirements may apply, such as meeting medical requirements and providing proof of residency in Wyoming. Also, you may need to meet specific driving record requirements and pass a criminal background check before obtaining your CDL Doubles/Triples license.

Wyoming does not have specific training requirements for obtaining a CDL Doubles/Triples endorsement. However, it is recommended that you have some experience and training in operating a commercial vehicle with doubles/triples before attempting to obtain the endorsement. This will help ensure that you are adequately prepared to pass the skills test and safely operate a commercial vehicle with doubles/triples.

Additionally, many employers may require drivers to have additional training or experience in operating a commercial vehicle with doubles/triples before hiring them. Therefore, it may be beneficial to seek out additional training or experience through a driving school or your employer before attempting to obtain the Doubles/Triples endorsement.

Yes, to obtain a CDL Doubles/Triples endorsement, you must pass an additional written test in addition to the standard CDL knowledge test. The Doubles/Triples endorsement test covers information specific to the operation of commercial vehicles with doubles/triples.

The test will cover topics such as:

- Inspecting doubles/triples
- Coupling and uncoupling
- Safe driving practices for doubles/triples
- Emergency procedures
- Special considerations for driving with doubles/triples

You must pass this written test before you can take the skills test for the Doubles/Triples endorsement. It is important to study and prepare for this test in order to ensure that you have a good understanding of the specific rules and regulations that apply to driving commercial vehicles with doubles/triples.

To obtain a CDL Doubles/Triples endorsement, you must pass a skills test in addition to the written test. The skills test will involve demonstrating your ability to safely operate a commercial vehicle with doubles/triples in a variety of situations.

During the skills test, you will be required to demonstrate the following maneuvers:

1. Pre-trip inspection: You will be asked to conduct a pre-trip inspection of the vehicle, including checking the coupling system, air lines, and electrical connections.

2. Coupling: You will be required to properly couple the doubles/triples together, including adjusting the fifth-wheel and connecting air and electrical lines.

3. Driving: You will be asked to drive the commercial vehicle with doubles/triples in a variety of situations, including backing up, turning, merging onto highways, and driving on urban and rural roads.

4. Uncoupling: You will be required to properly uncouple the doubles/triples, including disconnecting air and electrical lines and releasing the fifth-wheel locks.

5. Emergency maneuvers: You may be asked to demonstrate your ability to safely perform emergency maneuvers with doubles/triples, such as sudden stops or evasive maneuvers.

It is important to practice these maneuvers thoroughly before taking the skills test in order to ensure that you are adequately prepared and can safely operate a commercial vehicle with doubles/triples.

No, you cannot operate double/triple trailers without a CDL Doubles/Triples endorsement. A CDL with Doubles/Triples endorsement is required to operate a commercial vehicle that has double/triple trailers attached to it.

It is illegal to operate a commercial vehicle with double/triple trailers without the proper endorsement, and you may face penalties and fines if you are caught doing so. Additionally, driving a commercial vehicle with doubles/triples requires specialized knowledge and skills that are covered in the Doubles/Triples endorsement test and skills test.

Therefore, before operating a commercial vehicle with doubles/triples, you must pass the written test and skills test required to obtain this endorsement on your CDL.

You can add the CDL Doubles/Triples endorsement to your existing CDL license. You do not need to apply for a new license.

To add the Doubles/Triples endorsement to your CDL license, you will need to pass the written test for the endorsement and also pass a skills test that demonstrates your ability to safely operate a commercial vehicle with doubles/triples.

You can schedule an appointment with your local Wyoming Department of Transportation (WYDOT) driver exam station to take the written and skills tests required for the endorsement. Once you have passed both tests, WYDOT will add the Doubles/Triples endorsement to your CDL license.

It is important to note that there may be additional fees associated with adding the Doubles/Triples endorsement to your CDL license. You should check with WYDOT for specific information on fees and requirements for adding this endorsement to your license.

Yes, there are restrictions and limitations for drivers with a CDL Doubles/Triples endorsement.

One of the primary restrictions is that drivers with a Doubles/Triples endorsement can only operate commercial vehicles with double/triple trailers that meet certain length and weight requirements. In Wyoming, the maximum weight for a double trailer is 68,000 pounds and the maximum length for a combination of commercial motor vehicles is 85 feet.

Drivers with a Doubles/Triples endorsement are also required to follow specific rules related to maneuvering and backing up their commercial vehicle with double/triple trailers. For example, they must avoid making sudden movements or sharp turns that could cause the trailers to swing out of control.

Additionally, drivers with a Doubles/Triples endorsement must have additional training and experience in order to safely operate commercial vehicles with double/triple trailers. They must be able to safely couple and uncouple the trailers, operate the air brakes and electrical systems on the trailers, and properly distribute the weight of the cargo between the trailers.

It is important for drivers with a Doubles/Triples endorsement to be aware of these restrictions and limitations, as well as any additional state or federal regulations that may apply to their specific situation.

In Wyoming, the maximum weight limit for double/triple trailers is 68,000 pounds with a CDL Doubles/Triples endorsement. The maximum length limit for a combination of commercial motor vehicles is 85 feet.

It is important to note that these weight and length limits are specific to Wyoming, and other states may have different limits. Drivers with a CDL Doubles/Triples endorsement should be aware of the weight and length limits in each state they operate in to ensure compliance with local regulations.

Additionally, drivers with a Doubles/Triples endorsement must have additional training and experience in order to safely operate commercial vehicles with double/triple trailers. They must be able to safely couple and uncouple the trailers, operate the air brakes and electrical systems on the trailers, and properly distribute the weight of the cargo between the trailers.

Yes, there are specific safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement.

Firstly, drivers with a Doubles/Triples endorsement must be aware of the additional length and weight of their commercial vehicle, and adjust their driving accordingly. This includes giving themselves extra space to stop, turning more slowly and deliberately, and avoiding sudden movements that could cause the trailers to sway or jackknife.

Drivers with a Doubles/Triples endorsement must also be aware of the additional space required for maneuvering and parking their commercial vehicle with double/triple trailers. They should avoid making sharp turns that could cause the trailers to swing out of control, and should always be aware of low clearance obstacles such as overpasses or bridges.

Additionally, drivers with a Doubles/Triples endorsement must have additional training and experience in order to safely operate commercial vehicles with double/triple trailers. They must be able to safely couple and uncouple the trailers, operate the air brakes and electrical systems on the trailers, and properly distribute the weight of the cargo between the trailers.

There are also specific regulations regarding the inspection, maintenance, and repair of commercial vehicles with double/triple trailers. Drivers with a Doubles/Triples endorsement must ensure their vehicle is in good working order before each trip, and should follow all recommended maintenance schedules to ensure their vehicle remains safe and roadworthy.

It is important for drivers with a Doubles/Triples endorsement to be aware of these safety considerations and regulations, as well as any additional state or federal regulations that may apply to their specific situation.
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