Double
This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three or four possible answer choices. Test questions come from the Wisconsin Commercial Driver’s Manual. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
Number of Question
Passing Score
1. Pressing and releasing a brake pedal unnecessarily can:
Explanation
In an air brake system, pressing and releasing the brake pedal unnecessarily can release air from the braking system faster than the compressor can replace it.
2. The air compressor is connected to the:
Explanation
The air compressor of an air brake system is connected to the engine through gears or a v-belt. The compressor may be air-cooled or cooled by the engine cooling system.
3. If you are braking on dry pavement while traveling at 55 mph, how much distance will brake lag add to your overall stopping distance?
Explanation
The total stopping distance for vehicles equipped with air brakes is made up of four factors: perception distance, reaction distance, brake lag distance, and braking distance. When braking at a speed of 55 mph while driving on dry pavement, the brake lag can add around 32 feet to the vehicle's total stopping distance.
4. Air lines should be securely connected to:
Explanation
When inspecting the convertor dolly, ensure that all components are present and in proper working condition. 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 for easy turning.
5. Mirrors should be adjusted:
Explanation
Mirrors should be checked prior to the beginning of a trip. On a vehicle with a trailer, mirror adjustment can only be checked accurately if the connected trailer is straight.
6. Most heavy-duty vehicles use ____ air brake systems.
Explanation
The majority of heavy-duty vehicles are equipped with dual air brake systems.
7. What happens if the air pressure in a system's air tanks falls below 60 psi?
Explanation
In an air brake system, a low pressure warning signal should activate if the pressure in the air tanks falls to a level below 60 psi. This signal may be in the form of a warning light or a wig wag.
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Frequently Asked Questions
To obtain a CDL Doubles/Triples endorsement in Wisconsin, follow these steps:
1. Obtain a Commercial Driver's License (CDL) by passing the required knowledge and skills tests and meeting other eligibility requirements.
2. Complete the Commercial Driver License Application (form MV3001) and check the box for Doubles/Triples endorsement.
3. Pay the required fee for the endorsement.
4. Study for the Doubles/Triples knowledge test by reviewing relevant sections of the Wisconsin Commercial Driver's Manual.
5. Schedule an appointment at a Wisconsin DMV service center to take the Doubles/Triples knowledge test.
6. Pass the Doubles/Triples knowledge test with a score of at least 80%.
7. Obtain a doubles/triples vehicle for your skills test, which must be conducted by a third-party examiner or DMV representative.
8. Pass the Doubles/Triples skills test, which includes a pre-trip inspection and on-road driving portion.
9. Once you have passed both tests, your new CDL with Doubles/Triples endorsement will be issued to you.
Note: You must be at least 21 years old to obtain a CDL with a Doubles/Triples endorsement in Wisconsin.
1. Obtain a Commercial Driver's License (CDL) by passing the required knowledge and skills tests and meeting other eligibility requirements.
2. Complete the Commercial Driver License Application (form MV3001) and check the box for Doubles/Triples endorsement.
3. Pay the required fee for the endorsement.
4. Study for the Doubles/Triples knowledge test by reviewing relevant sections of the Wisconsin Commercial Driver's Manual.
5. Schedule an appointment at a Wisconsin DMV service center to take the Doubles/Triples knowledge test.
6. Pass the Doubles/Triples knowledge test with a score of at least 80%.
7. Obtain a doubles/triples vehicle for your skills test, which must be conducted by a third-party examiner or DMV representative.
8. Pass the Doubles/Triples skills test, which includes a pre-trip inspection and on-road driving portion.
9. Once you have passed both tests, your new CDL with Doubles/Triples endorsement will be issued to you.
Note: You must be at least 21 years old to obtain a CDL with a Doubles/Triples endorsement in Wisconsin.
To get a CDL Doubles/Triples license in Wisconsin, you must meet the following requirements:
1. Be at least 21 years old.
2. Hold a valid Wisconsin commercial driver's license (CDL) or be applying for a CDL at the same time.
3. Have a clean driving record with no serious traffic violations or recent drug or alcohol violations.
4. Pass a Doubles/Triples knowledge test, which covers topics such as coupling and uncoupling, inspecting doubles/triples, and driving doubles/triples safely.
5. Pass a Doubles/Triples skills test, which includes a pre-trip inspection and an on-road driving test in a doubles/triples vehicle.
6. Pay the required fees for the endorsement.
It's important to note that obtaining a Doubles/Triples endorsement is not required to operate other types of commercial motor vehicles. However, if you plan to drive a vehicle with double or triple trailers, you must have this endorsement on your CDL.
1. Be at least 21 years old.
2. Hold a valid Wisconsin commercial driver's license (CDL) or be applying for a CDL at the same time.
3. Have a clean driving record with no serious traffic violations or recent drug or alcohol violations.
4. Pass a Doubles/Triples knowledge test, which covers topics such as coupling and uncoupling, inspecting doubles/triples, and driving doubles/triples safely.
5. Pass a Doubles/Triples skills test, which includes a pre-trip inspection and an on-road driving test in a doubles/triples vehicle.
6. Pay the required fees for the endorsement.
It's important to note that obtaining a Doubles/Triples endorsement is not required to operate other types of commercial motor vehicles. However, if you plan to drive a vehicle with double or triple trailers, you must have this endorsement on your CDL.
Wisconsin does not have a specific requirement for training or experience to obtain a CDL Doubles/Triples endorsement. However, it is strongly recommended that you have experience operating a commercial vehicle with a single trailer before attempting to drive a vehicle with double or triple trailers.
Additionally, the Wisconsin DMV may require that you complete a commercial driver training program before you can obtain your CDL. This program will provide you with the knowledge and skills needed to operate commercial motor vehicles safely and efficiently, including vehicles with double or triple trailers.
It's important to note that training programs may vary in length and cost, so be sure to research different options and choose a program that meets your needs and budget.
Additionally, the Wisconsin DMV may require that you complete a commercial driver training program before you can obtain your CDL. This program will provide you with the knowledge and skills needed to operate commercial motor vehicles safely and efficiently, including vehicles with double or triple trailers.
It's important to note that training programs may vary in length and cost, so be sure to research different options and choose a program that meets your needs and budget.
Yes, in Wisconsin, to obtain a CDL Doubles/Triples endorsement, you must pass an additional knowledge test. The test will cover topics specific to driving double or triple trailers, including:
1. Inspecting double/triple trailers
2. Coupling and uncoupling double/triple trailers
3. Double/triple trailer air brake systems
4. Driving double/triple trailers safely
You will need to score a passing grade on this test in order to obtain your CDL Doubles/Triples endorsement.
It's important to note that you will also need to pass a skills test which includes a pre-trip inspection and an on-road driving test in a doubles/triples vehicle. This skills test will assess your ability to safely operate a vehicle with double or triple trailers.
1. Inspecting double/triple trailers
2. Coupling and uncoupling double/triple trailers
3. Double/triple trailer air brake systems
4. Driving double/triple trailers safely
You will need to score a passing grade on this test in order to obtain your CDL Doubles/Triples endorsement.
It's important to note that you will also need to pass a skills test which includes a pre-trip inspection and an on-road driving test in a doubles/triples vehicle. This skills test will assess your ability to safely operate a vehicle with double or triple trailers.
In Wisconsin, to obtain a CDL Doubles/Triples endorsement, you must pass a skills test that includes a pre-trip inspection and an on-road driving test in a doubles/triples vehicle. The on-road driving test will assess your ability to safely operate a vehicle with double or triple trailers and will include the following maneuvers:
1. Pre-trip inspection: You will be required to complete a thorough inspection of the vehicle, including the double or triple trailer(s), to ensure that it is in safe operating condition.
2. Straight line backing: You will need to back up the vehicle in a straight line for approximately 100 feet.
3. Offset backing: You will need to back the vehicle through an offset alley.
4. Parallel parking: You will need to park the vehicle parallel to the curb.
5. Coupling and uncoupling: You will be required to couple and uncouple the double or triple trailer(s) from the tractor unit.
6. On-road driving: You will need to demonstrate your ability to safely operate the vehicle with double or triple trailers on public roads, including making turns, changing lanes, stopping and starting, and driving in traffic.
It's important to note that you must pass all parts of the skills test in order to obtain your CDL Doubles/Triples endorsement.
1. Pre-trip inspection: You will be required to complete a thorough inspection of the vehicle, including the double or triple trailer(s), to ensure that it is in safe operating condition.
2. Straight line backing: You will need to back up the vehicle in a straight line for approximately 100 feet.
3. Offset backing: You will need to back the vehicle through an offset alley.
4. Parallel parking: You will need to park the vehicle parallel to the curb.
5. Coupling and uncoupling: You will be required to couple and uncouple the double or triple trailer(s) from the tractor unit.
6. On-road driving: You will need to demonstrate your ability to safely operate the vehicle with double or triple trailers on public roads, including making turns, changing lanes, stopping and starting, and driving in traffic.
It's important to note that you must pass all parts of the skills test in order to obtain your CDL Doubles/Triples endorsement.
No, in Wisconsin, you must have a CDL Doubles/Triples endorsement in order to operate double or triple trailers.
Operating a commercial vehicle with double or triple trailers without the proper endorsement is a violation of state and federal regulations and can result in fines, penalties, and even the suspension or revocation of your CDL.
It's important to note that the rules and requirements for CDL endorsements may vary by state, so it's always a good idea to check with your state's Department of Transportation or Department of Motor Vehicles for specific requirements.
Operating a commercial vehicle with double or triple trailers without the proper endorsement is a violation of state and federal regulations and can result in fines, penalties, and even the suspension or revocation of your CDL.
It's important to note that the rules and requirements for CDL endorsements may vary by state, so it's always a good idea to check with your state's Department of Transportation or Department of Motor Vehicles for specific requirements.
In Wisconsin, you can add the CDL Doubles/Triples endorsement to your existing CDL license without applying for a new license.
To add the endorsement, you will need to pass the required knowledge and skills tests and pay the appropriate fees.
You can schedule an appointment for the skills test at a Wisconsin DMV service center. Be sure to bring your current CDL license, proof of insurance for the vehicle you will be using for the test, and any other required documents or forms.
Once you have passed the tests and paid the fees, the endorsement will be added to your existing CDL license.
To add the endorsement, you will need to pass the required knowledge and skills tests and pay the appropriate fees.
You can schedule an appointment for the skills test at a Wisconsin DMV service center. Be sure to bring your current CDL license, proof of insurance for the vehicle you will be using for the test, and any other required documents or forms.
Once you have passed the tests and paid the fees, the endorsement will be added to your existing CDL license.
Yes, there are restrictions and limitations that apply to drivers with a CDL Doubles/Triples endorsement in Wisconsin.
Here are some of the key restrictions:
1. Vehicle combination: You are only allowed to operate a vehicle combination that includes two or three trailers.
2. Weight limits: You cannot exceed the weight limits established by Wisconsin law for double or triple trailer combinations.
3. Speed limits: You must obey all posted speed limits, as well as any additional speed limits that apply to double or triple trailer combinations.
4. Lane usage: You must follow the rules for lane usage that apply to double or triple trailer combinations.
5. Special driving skills: You must have the special driving skills necessary to operate a double or triple trailer combination safely, including backing, turning, and maneuvering in tight spaces.
It's important to note that these restrictions and limitations may vary by state, so it's always a good idea to check with your state's Department of Transportation or Department of Motor Vehicles for specific requirements.
Here are some of the key restrictions:
1. Vehicle combination: You are only allowed to operate a vehicle combination that includes two or three trailers.
2. Weight limits: You cannot exceed the weight limits established by Wisconsin law for double or triple trailer combinations.
3. Speed limits: You must obey all posted speed limits, as well as any additional speed limits that apply to double or triple trailer combinations.
4. Lane usage: You must follow the rules for lane usage that apply to double or triple trailer combinations.
5. Special driving skills: You must have the special driving skills necessary to operate a double or triple trailer combination safely, including backing, turning, and maneuvering in tight spaces.
It's important to note that these restrictions and limitations may vary by state, so it's always a good idea to check with your state's Department of Transportation or Department of Motor Vehicles for specific requirements.
In Wisconsin, the maximum weight and length limits for double/triple trailers with a CDL Doubles/Triples endorsement are as follows:
1. Maximum weight limits:
- Double trailer: 34,000 pounds per trailer or a combined weight of 80,000 pounds for both trailers
- Triple trailer: 28,000 pounds per trailer or a combined weight of 80,000 pounds for all three trailers
2. Maximum length limits:
- Double trailer: 28 feet per trailer or a combined length of 65 feet for both trailers
- Triple trailer: 28 feet per trailer or a combined length of 48 feet for all three trailers
It's important to note that these weight and length limits may vary by state, and there may be additional requirements or restrictions for double/triple trailer combinations. Be sure to check with your state's Department of Transportation or Department of Motor Vehicles for specific requirements and regulations.
1. Maximum weight limits:
- Double trailer: 34,000 pounds per trailer or a combined weight of 80,000 pounds for both trailers
- Triple trailer: 28,000 pounds per trailer or a combined weight of 80,000 pounds for all three trailers
2. Maximum length limits:
- Double trailer: 28 feet per trailer or a combined length of 65 feet for both trailers
- Triple trailer: 28 feet per trailer or a combined length of 48 feet for all three trailers
It's important to note that these weight and length limits may vary by state, and there may be additional requirements or restrictions for double/triple trailer combinations. Be sure to check with your state's Department of Transportation or Department of Motor Vehicles for specific requirements and regulations.
Yes, there are specific safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement in Wisconsin. Here are some of the key safety considerations and regulations:
1. Special driving skills: You must have the special driving skills necessary to operate a double or triple trailer combination safely, including backing, turning, and maneuvering in tight spaces.
2. Braking system: The braking system of double/triple trailers must be able to stop the combination within the distance required by Wisconsin law.
3. Coupling: The coupling system must be able to securely connect the trailers and must be inspected regularly.
4. Weight distribution: You must ensure that the weight is properly distributed between the trailers to prevent sway or instability.
5. Inspection and maintenance: You must inspect your vehicle combination before each trip, and perform regular maintenance to ensure that it is in good condition.
6. Speed limits: You must obey all posted speed limits, as well as any additional speed limits that apply to double or triple trailer combinations.
7. Lane usage: You must follow the rules for lane usage that apply to double or triple trailer combinations.
It's important to note that these safety considerations and regulations may vary by state, so it's always a good idea to check with your state's Department of Transportation or Department of Motor Vehicles for specific requirements.
1. Special driving skills: You must have the special driving skills necessary to operate a double or triple trailer combination safely, including backing, turning, and maneuvering in tight spaces.
2. Braking system: The braking system of double/triple trailers must be able to stop the combination within the distance required by Wisconsin law.
3. Coupling: The coupling system must be able to securely connect the trailers and must be inspected regularly.
4. Weight distribution: You must ensure that the weight is properly distributed between the trailers to prevent sway or instability.
5. Inspection and maintenance: You must inspect your vehicle combination before each trip, and perform regular maintenance to ensure that it is in good condition.
6. Speed limits: You must obey all posted speed limits, as well as any additional speed limits that apply to double or triple trailer combinations.
7. Lane usage: You must follow the rules for lane usage that apply to double or triple trailer combinations.
It's important to note that these safety considerations and regulations may vary by state, so it's always a good idea to check with your state's Department of Transportation or Department of Motor Vehicles for specific requirements.
