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. Test questions come from the Michigan 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. You can confirm that a tractor protection valve is working properly by:
Explanation
You should test the tractor protection valve by allowing the air supply to properly charge, turning off the engine, then releasing air from the system by pressing the brake pedal several times. The tractor protection valve should move into its emergency position when psi drops to an unsafe level.
9. Truck tractors with air brakes built on or after March 1, 1997 must have:
Explanation
Truck tractors with air brakes built on or after March 1, 1997, and other vehicles with air brakes built on or after March 1, 1998, must be equipped with anti-lock brakes.
10. You should check and adjust your mirrors:
Explanation
Be sure to check your mirrors before beginning a drive. Your posture may change day to day and your mirrors may need to be adjusted.
11. To stay alert while driving, you should:
Explanation
Splitting driving responsibilities with a second driver lowers the chance that either of you will drive while fatigued. You can also reduce the risk of fatigue by avoiding heavy foods and keeping the interior of the cab cool.
12. To prevent your vehicle from rolling backward when beginning to move, you can:
Explanation
To ensure that your vehicle does not roll backward when beginning to move after a stop, you should partly engage the clutch before removing your right foot from the brake pedal.
13. If the low air pressure warning signal comes on, you should:
Explanation
If the low air pressure warning signal comes on while you are driving a vehicle with air brakes, you should immediately bring the vehicle to a safe stop while you are still able to control the brakes. Inspect and repair the brakes as soon as possible.
14. When making a left turn, you should start the turn:
Explanation
When making a left turn, you should wait until you reach the center of the intersection before actually beginning to turn. Due to off-tracking, the left side of your vehicle could hit another driver if you begin turning too early.
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Frequently Asked Questions
To obtain a CDL Doubles/Triples endorsement in Michigan, follow these steps:
1. Obtain a Commercial Driver’s License (CDL): You must have a valid CDL before you can apply for a Doubles/Triples endorsement. To obtain a CDL, you must pass a written knowledge test and a skills test.
2. Meet the eligibility requirements: To obtain a Doubles/Triples endorsement, you must be at least 18 years old (21 years old for interstate travel), have a valid Michigan CDL and have a clean driving record.
3. Study the Michigan CDL Manual: The manual contains information that you will need to know to pass the written knowledge test. The manual is available online or at any Michigan Secretary of State office.
4. Schedule an appointment: Contact the Michigan Secretary of State office to schedule an appointment for the written knowledge test.
5. Pass the written knowledge test: You will need to pass the Doubles/Triples endorsement-specific written knowledge test with a score of 80% or higher.
6. Pay the endorsement fee: There is an additional fee for the Doubles/Triples endorsement, which must be paid at the time of application.
7. Pass a skills test: After passing the written knowledge test and paying the fee, you will need to pass a skills test in order to obtain your CDL with Doubles/Triples endorsement. The skills test will include a pre-trip inspection, basic control skills and an on-road driving test.
8. Receive your CDL with Doubles/Triples endorsement: If you pass the skills test, you will receive your CDL with Doubles/Triples endorsement.
1. Obtain a Commercial Driver’s License (CDL): You must have a valid CDL before you can apply for a Doubles/Triples endorsement. To obtain a CDL, you must pass a written knowledge test and a skills test.
2. Meet the eligibility requirements: To obtain a Doubles/Triples endorsement, you must be at least 18 years old (21 years old for interstate travel), have a valid Michigan CDL and have a clean driving record.
3. Study the Michigan CDL Manual: The manual contains information that you will need to know to pass the written knowledge test. The manual is available online or at any Michigan Secretary of State office.
4. Schedule an appointment: Contact the Michigan Secretary of State office to schedule an appointment for the written knowledge test.
5. Pass the written knowledge test: You will need to pass the Doubles/Triples endorsement-specific written knowledge test with a score of 80% or higher.
6. Pay the endorsement fee: There is an additional fee for the Doubles/Triples endorsement, which must be paid at the time of application.
7. Pass a skills test: After passing the written knowledge test and paying the fee, you will need to pass a skills test in order to obtain your CDL with Doubles/Triples endorsement. The skills test will include a pre-trip inspection, basic control skills and an on-road driving test.
8. Receive your CDL with Doubles/Triples endorsement: If you pass the skills test, you will receive your CDL with Doubles/Triples endorsement.
To get a CDL Doubles/Triples license in Michigan, you must meet the following requirements:
1. Be at least 18 years old: You must be at least 18 years old to drive intrastate (within Michigan), or 21 years old to drive interstate (across state lines).
2. Have a valid Michigan driver’s license: You must have a valid Michigan driver’s license.
3. Pass a medical exam: You must pass a medical exam to ensure that you are physically qualified to operate a commercial motor vehicle.
4. Obtain a CDL permit: You must obtain a CDL permit before you can take the skills test. To obtain a CDL permit, you must pass the written knowledge test for the class of commercial vehicle you want to operate and any endorsements you need, such as Doubles/Triples.
5. Pass the Doubles/Triples endorsement written test: You must pass the written knowledge test for the Doubles/Triples endorsement with a score of 80% or higher.
6. Pass the skills test: You must pass a skills test in order to obtain your CDL with Doubles/Triples endorsement. The skills test will include a pre-trip inspection, basic control skills and an on-road driving test.
7. Have no disqualifying criminal history: You cannot have certain criminal convictions on your record that would disqualify you from obtaining a CDL, such as driving under the influence (DUI) or leaving the scene of an accident.
These are the basic requirements for obtaining a CDL Doubles/Triples license in Michigan. However, there may be additional requirements depending on your specific situation, such as completing specialized training or obtaining additional endorsements for hazardous materials or passenger transport.
1. Be at least 18 years old: You must be at least 18 years old to drive intrastate (within Michigan), or 21 years old to drive interstate (across state lines).
2. Have a valid Michigan driver’s license: You must have a valid Michigan driver’s license.
3. Pass a medical exam: You must pass a medical exam to ensure that you are physically qualified to operate a commercial motor vehicle.
4. Obtain a CDL permit: You must obtain a CDL permit before you can take the skills test. To obtain a CDL permit, you must pass the written knowledge test for the class of commercial vehicle you want to operate and any endorsements you need, such as Doubles/Triples.
5. Pass the Doubles/Triples endorsement written test: You must pass the written knowledge test for the Doubles/Triples endorsement with a score of 80% or higher.
6. Pass the skills test: You must pass a skills test in order to obtain your CDL with Doubles/Triples endorsement. The skills test will include a pre-trip inspection, basic control skills and an on-road driving test.
7. Have no disqualifying criminal history: You cannot have certain criminal convictions on your record that would disqualify you from obtaining a CDL, such as driving under the influence (DUI) or leaving the scene of an accident.
These are the basic requirements for obtaining a CDL Doubles/Triples license in Michigan. However, there may be additional requirements depending on your specific situation, such as completing specialized training or obtaining additional endorsements for hazardous materials or passenger transport.
While there is no specific experience or training required to obtain a CDL Doubles/Triples endorsement in Michigan, it is highly recommended that you have some experience and training before attempting to operate a commercial motor vehicle with double or triple trailers.
Many truck driving schools offer specialized training for Doubles/Triples endorsements. This training can provide you with the knowledge and skills you need to safely and effectively operate a commercial motor vehicle with double or triple trailers. You can also gain valuable experience by working as a driver for a carrier that operates double or triple trailers.
It is important to note that Michigan requires all CDL holders to complete continuing education in order to maintain their license. This includes 4 hours of continuing education for drivers with a Doubles/Triples endorsement. Continuing education courses can provide you with additional training and knowledge to help you operate your commercial motor vehicle safely and efficiently.
In summary, while specific experience or training is not required to obtain a CDL Doubles/Triples endorsement in Michigan, it is highly recommended that you seek out specialized training and gain some experience before attempting to operate a commercial motor vehicle with double or triple trailers.
Many truck driving schools offer specialized training for Doubles/Triples endorsements. This training can provide you with the knowledge and skills you need to safely and effectively operate a commercial motor vehicle with double or triple trailers. You can also gain valuable experience by working as a driver for a carrier that operates double or triple trailers.
It is important to note that Michigan requires all CDL holders to complete continuing education in order to maintain their license. This includes 4 hours of continuing education for drivers with a Doubles/Triples endorsement. Continuing education courses can provide you with additional training and knowledge to help you operate your commercial motor vehicle safely and efficiently.
In summary, while specific experience or training is not required to obtain a CDL Doubles/Triples endorsement in Michigan, it is highly recommended that you seek out specialized training and gain some experience before attempting to operate a commercial motor vehicle with double or triple trailers.
Yes, in Michigan, you must pass an additional written test to obtain a CDL Doubles/Triples endorsement. The written test covers knowledge and skills specific to operating commercial vehicles with double or triple trailers.
The Doubles/Triples endorsement written test consists of 20 multiple-choice questions. You must answer at least 16 of the questions correctly to pass the test. The test covers topics such as:
- Inspecting doubles and triples
- Coupling and uncoupling
- Inspecting air brake systems
- Driving double and triple trailers safely
- Antilock braking systems
It is important to note that in addition to the Doubles/Triples endorsement written test, you must also pass the general knowledge written test for the class of commercial vehicle you want to operate, as well as any other required endorsement tests such as Hazardous Materials or Passenger Transport.
In summary, if you want to obtain a CDL Doubles/Triples endorsement in Michigan, you need to pass an additional written test that covers knowledge and skills specific to operating commercial vehicles with double or triple trailers.
The Doubles/Triples endorsement written test consists of 20 multiple-choice questions. You must answer at least 16 of the questions correctly to pass the test. The test covers topics such as:
- Inspecting doubles and triples
- Coupling and uncoupling
- Inspecting air brake systems
- Driving double and triple trailers safely
- Antilock braking systems
It is important to note that in addition to the Doubles/Triples endorsement written test, you must also pass the general knowledge written test for the class of commercial vehicle you want to operate, as well as any other required endorsement tests such as Hazardous Materials or Passenger Transport.
In summary, if you want to obtain a CDL Doubles/Triples endorsement in Michigan, you need to pass an additional written test that covers knowledge and skills specific to operating commercial vehicles with double or triple trailers.
In Michigan, the CDL Doubles/Triples endorsement test consists of a skills test, which includes specific maneuvers you must demonstrate in order to pass. The skills test evaluates your ability to control a vehicle with double or triple trailers safely and effectively.
The following are the specific skills or maneuvers you will need to demonstrate during the CDL Doubles/Triples endorsement test:
1. Pre-trip inspection: You will need to complete a thorough pre-trip inspection of your vehicle and double or triple trailers, identifying any potential safety hazards.
2. Coupling and uncoupling: You will need to demonstrate your ability to properly couple and uncouple the double or triple trailers from your vehicle.
3. Straight-line backing: You will need to back your vehicle and double or triple trailers in a straight line for a distance of at least 100 feet.
4. 90-degree alley docking: You will need to back your vehicle and double or triple trailers into an alley dock with a 90-degree turn.
5. Offset backing: You will need to back your vehicle and double or triple trailers through an offset alley with a 90-degree turn.
6. Rearward cornering: You will need to navigate your vehicle and double or triple trailers through a serpentine course, making two 90-degree turns in opposite directions.
It is important to note that during the skills test, you will be evaluated on your ability to safely and accurately complete each maneuver, as well as your overall control of the vehicle with double or triple trailers.
In summary, in Michigan, the CDL Doubles/Triples endorsement test includes a skills test that evaluates your ability to control a vehicle with double or triple trailers safely and effectively. The skills test includes specific maneuvers such as pre-trip inspection, coupling and uncoupling, straight-line backing, 90-degree alley docking, offset backing, and rearward cornering.
The following are the specific skills or maneuvers you will need to demonstrate during the CDL Doubles/Triples endorsement test:
1. Pre-trip inspection: You will need to complete a thorough pre-trip inspection of your vehicle and double or triple trailers, identifying any potential safety hazards.
2. Coupling and uncoupling: You will need to demonstrate your ability to properly couple and uncouple the double or triple trailers from your vehicle.
3. Straight-line backing: You will need to back your vehicle and double or triple trailers in a straight line for a distance of at least 100 feet.
4. 90-degree alley docking: You will need to back your vehicle and double or triple trailers into an alley dock with a 90-degree turn.
5. Offset backing: You will need to back your vehicle and double or triple trailers through an offset alley with a 90-degree turn.
6. Rearward cornering: You will need to navigate your vehicle and double or triple trailers through a serpentine course, making two 90-degree turns in opposite directions.
It is important to note that during the skills test, you will be evaluated on your ability to safely and accurately complete each maneuver, as well as your overall control of the vehicle with double or triple trailers.
In summary, in Michigan, the CDL Doubles/Triples endorsement test includes a skills test that evaluates your ability to control a vehicle with double or triple trailers safely and effectively. The skills test includes specific maneuvers such as pre-trip inspection, coupling and uncoupling, straight-line backing, 90-degree alley docking, offset backing, and rearward cornering.
No, in Michigan, you cannot operate a commercial motor vehicle (CMV) with double or triple trailers without a CDL Doubles/Triples endorsement.
According to Michigan law, a driver must possess a valid CDL with the required endorsements to operate a commercial motor vehicle that meets certain criteria, including but not limited to gross vehicle weight rating (GVWR), number of axles, or type of cargo being transported.
If you are caught operating a CMV with double or triple trailers without the proper endorsement, you could face penalties such as fines, license suspension or revocation, and even criminal charges depending on the severity of the violation.
Therefore, it is important to obtain the proper endorsements for the type of commercial vehicle you will be operating in order to comply with Michigan law and ensure safe operation on the roadways.
According to Michigan law, a driver must possess a valid CDL with the required endorsements to operate a commercial motor vehicle that meets certain criteria, including but not limited to gross vehicle weight rating (GVWR), number of axles, or type of cargo being transported.
If you are caught operating a CMV with double or triple trailers without the proper endorsement, you could face penalties such as fines, license suspension or revocation, and even criminal charges depending on the severity of the violation.
Therefore, it is important to obtain the proper endorsements for the type of commercial vehicle you will be operating in order to comply with Michigan law and ensure safe operation on the roadways.
In Michigan, you can add the CDL Doubles/Triples endorsement to your existing CDL license by passing the required knowledge and skills tests and paying the necessary fees.
To add the endorsement, you will need to visit a Secretary of State branch office and provide the following:
1. Your valid Michigan CDL license.
2. Proof of U.S. citizenship or lawful permanent residency in the U.S.
3. A passing score on the CDL Doubles/Triples endorsement knowledge test.
4. A passing score on the CDL Doubles/Triples endorsement skills test.
5. Payment of the necessary fees.
Once you have completed these requirements, your CDL license will be updated to include the Doubles/Triples endorsement.
It is important to note that adding an endorsement may also require additional medical exams or other requirements, depending on your specific situation and the type of vehicle you will be operating.
Therefore, it is recommended that you contact your local Secretary of State branch office or consult the Michigan Commercial Driver License Manual for more information on adding endorsements to your CDL license.
To add the endorsement, you will need to visit a Secretary of State branch office and provide the following:
1. Your valid Michigan CDL license.
2. Proof of U.S. citizenship or lawful permanent residency in the U.S.
3. A passing score on the CDL Doubles/Triples endorsement knowledge test.
4. A passing score on the CDL Doubles/Triples endorsement skills test.
5. Payment of the necessary fees.
Once you have completed these requirements, your CDL license will be updated to include the Doubles/Triples endorsement.
It is important to note that adding an endorsement may also require additional medical exams or other requirements, depending on your specific situation and the type of vehicle you will be operating.
Therefore, it is recommended that you contact your local Secretary of State branch office or consult the Michigan Commercial Driver License Manual for more information on adding endorsements to your CDL license.
Yes, there are certain restrictions and limitations for drivers with a CDL Doubles/Triples endorsement in Michigan.
The following are some of the restrictions and limitations that apply to drivers with this endorsement:
1. Vehicle weight: The total weight of the vehicle and trailers must not exceed 80,000 pounds.
2. Number of trailers: A driver with a Doubles/Triples endorsement can only operate a vehicle with two or three trailers.
3. Length of trailers: The maximum length of each trailer is 28.5 feet.
4. Driving conditions: Drivers with a Doubles/Triples endorsement are not allowed to operate these vehicles in certain driving conditions, such as high winds, icy roads, or other hazardous conditions that could affect the safe operation of the vehicle.
5. Endorsement renewal: The CDL Doubles/Triples endorsement must be renewed every four years.
It is important for drivers with a CDL Doubles/Triples endorsement to be aware of these restrictions and limitations and to comply with them in order to ensure safe operation on the roadways and avoid penalties or license suspension/revocation.
The following are some of the restrictions and limitations that apply to drivers with this endorsement:
1. Vehicle weight: The total weight of the vehicle and trailers must not exceed 80,000 pounds.
2. Number of trailers: A driver with a Doubles/Triples endorsement can only operate a vehicle with two or three trailers.
3. Length of trailers: The maximum length of each trailer is 28.5 feet.
4. Driving conditions: Drivers with a Doubles/Triples endorsement are not allowed to operate these vehicles in certain driving conditions, such as high winds, icy roads, or other hazardous conditions that could affect the safe operation of the vehicle.
5. Endorsement renewal: The CDL Doubles/Triples endorsement must be renewed every four years.
It is important for drivers with a CDL Doubles/Triples endorsement to be aware of these restrictions and limitations and to comply with them in order to ensure safe operation on the roadways and avoid penalties or license suspension/revocation.
In Michigan, drivers with a CDL Doubles/Triples endorsement are subject to weight and length limits when operating double/triple trailers. These limits are as follows:
1. Weight limit: The total weight of the vehicle and trailers must not exceed 80,000 pounds.
2. Length limit: The maximum length of each trailer is 28.5 feet.
It is important to note that these weight and length limits may vary depending on the state and the type of vehicle being operated. Therefore, it is important for drivers with a Doubles/Triples endorsement to be familiar with the specific weight and length limits for their state and to comply with them in order to ensure safe operation on the roadways and avoid penalties or license suspension/revocation.
1. Weight limit: The total weight of the vehicle and trailers must not exceed 80,000 pounds.
2. Length limit: The maximum length of each trailer is 28.5 feet.
It is important to note that these weight and length limits may vary depending on the state and the type of vehicle being operated. Therefore, it is important for drivers with a Doubles/Triples endorsement to be familiar with the specific weight and length limits for their state and to comply with them in order to ensure safe operation on the roadways and avoid penalties or license suspension/revocation.
Yes, there are specific safety considerations and regulations that apply to driving double/triple trailers with a CDL Doubles/Triples endorsement in Michigan. These regulations are in place to ensure the safety of the driver, passengers, and other road users. Some of the regulations include:
1. Vehicle inspection: Drivers with a Doubles/Triples endorsement are required to conduct a thorough inspection of their vehicle before each trip. This includes checking the brakes, tires, lights, and other safety features.
2. Driving conditions: As mentioned earlier, drivers with a Doubles/Triples endorsement should not operate these vehicles in certain driving conditions that could affect the safe operation of the vehicle.
3. Speed limits: Drivers should adhere to speed limits and take into consideration the increased stopping distance required when operating double/triple trailers.
4. Blind spots: Double/triple trailers have larger blind spots than regular vehicles, so drivers should be extra cautious when changing lanes or turning.
5. Proper loading: Double/triple trailers must be loaded properly to ensure that weight is distributed evenly and within the weight limits. Overloading or unevenly loaded trailers can cause instability and increase the risk of accidents.
It is important for drivers with a CDL Doubles/Triples endorsement to be aware of these safety considerations and regulations and to comply with them in order to ensure safe operation on the roadways and avoid penalties or license suspension/revocation.
1. Vehicle inspection: Drivers with a Doubles/Triples endorsement are required to conduct a thorough inspection of their vehicle before each trip. This includes checking the brakes, tires, lights, and other safety features.
2. Driving conditions: As mentioned earlier, drivers with a Doubles/Triples endorsement should not operate these vehicles in certain driving conditions that could affect the safe operation of the vehicle.
3. Speed limits: Drivers should adhere to speed limits and take into consideration the increased stopping distance required when operating double/triple trailers.
4. Blind spots: Double/triple trailers have larger blind spots than regular vehicles, so drivers should be extra cautious when changing lanes or turning.
5. Proper loading: Double/triple trailers must be loaded properly to ensure that weight is distributed evenly and within the weight limits. Overloading or unevenly loaded trailers can cause instability and increase the risk of accidents.
It is important for drivers with a CDL Doubles/Triples endorsement to be aware of these safety considerations and regulations and to comply with them in order to ensure safe operation on the roadways and avoid penalties or license suspension/revocation.
