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.
1. Look into the back of the fifth wheel:
While inspecting a coupling, you should go under the trailer and look into the back of the fifth wheel. Ensure that the fifth wheel jaws are secured around the shank of the kingpin.
2. What does the vehicle inspection report do?
A vehicle inspection report keeps the carrier informed about any problems that need to be fixed.
3. As part of the vehicle inspection test, you will be asked to:
During the vehicle inspection test, you will be asked to do a complete inspection of your vehicle. You will need to explain what you are inspecting and why.
4. Older trailers are not equipped with spring brakes. This means that if the air supply for a vehicle's air braking system leaks away:
Older trailers do not have spring brakes. This means that if the air supply in an older trailer's air tank has leaked away, there will be no working brakes connected to the trailer and its wheels will turn freely.
5. Do not base your decision to shift gears on:
One way to know when it is time to shift gears is to learn your vehicle's operating rpm range. You should shift up when your engine reaches the top of that range. You can also learn which speeds each gear is good for and shift up based on your speedometer.
6. A Class 1 hazardous material is:
Explosives are placed in hazardous materials Class 1.
7. Routine vehicle inspections should be done to ensure:
The most important reason to inspect your vehicle is to ensure the safety of yourself and other road users.
Frequently Asked Questions
1. Obtain a Michigan CDL: To get a CDL, you must pass a written knowledge test and a skills test. You will also need to provide proof of identity, residency, and citizenship or legal presence.
2. Study the Michigan CDL Manual: The Michigan CDL Manual covers the rules and regulations for driving commercial vehicles in the state. It includes information on doubles and triples.
3. Schedule a knowledge test: You must pass a knowledge test on doubles and triples to obtain the endorsement. You can schedule your test at a Michigan Secretary of State office.
4. Pass the knowledge test: The knowledge test consists of 20 multiple-choice questions. You must answer at least 16 correctly to pass.
5. Practice driving doubles/triples: To obtain the endorsement, you must also pass a skills test that includes driving doubles/triples. Practice driving with someone who has experience with doubles/triples or consider enrolling in a CDL training program.
6. Schedule a skills test: You can schedule your skills test at a Michigan Secretary of State office.
7. Pass the skills test: The skills test consists of three parts - pre-trip inspection, basic vehicle control, and on-road driving. You must demonstrate your ability to safely operate a commercial vehicle with doubles/triples.
8. Pay the endorsement fee: Once you have passed both tests, you will need to pay an endorsement fee to add it to your CDL.
Note: Before applying for the Doubles/Triples endorsement, make sure you meet all eligibility requirements set forth by the Federal Motor Carrier Safety Administration (FMCSA).
1. Age: You must be at least 18 years old to obtain a CDL Doubles/Triples license. However, if you plan to drive across state lines or transport hazardous materials, you must be at least 21 years old.
2. Valid driver's license: You must have a valid driver's license issued by the state of Michigan.
3. Medical certification: You must pass a physical examination and obtain a medical card to prove that you are physically qualified to operate a commercial motor vehicle.
4. Commercial Learner's Permit (CLP): Before taking the skills test, you must hold a valid CLP for at least 14 days.
5. CDL skills test: You must pass a skills test that includes driving doubles/triples.
6. Knowledge test: You must pass a written knowledge test on doubles/triples to obtain the endorsement.
7. Background check: You will need to undergo a criminal background check as part of the CDL application process.
8. Citizenship or legal presence: You must provide proof of citizenship or legal presence in the United States.
Note that there may be additional requirements set forth by the Federal Motor Carrier Safety Administration (FMCSA) for obtaining a CDL Doubles/Triples license, so be sure to check with your local Secretary of State office for more information.
To prepare for the skills test, you should consider enrolling in a CDL training program that includes instruction on driving doubles/triples. These programs can help you learn the necessary skills and techniques for safely operating these types of vehicles.
You may also want to practice driving with someone who has experience with doubles/triples. This can help you become more comfortable with the handling and maneuvering of these larger vehicles.
Finally, it's important to note that the Federal Motor Carrier Safety Administration (FMCSA) has specific requirements for obtaining a CDL Doubles/Triples endorsement, including additional training requirements for certain types of cargo. Be sure to check with your local Secretary of State office and review FMCSA regulations to ensure that you meet all requirements before attempting to obtain the endorsement.
1. Inspection of doubles/triples
2. Coupling and uncoupling of doubles/triples
3. Inspecting air brake systems on doubles/triples
4. Driving doubles/triples safely
5. Manuevering doubles/triples
6. Emergency procedures for doubles/triples
The knowledge test for the Doubles/Triples endorsement is in addition to the general knowledge test that all CDL applicants must pass. You will also need to pass a skills test that includes driving doubles/triples.
It's important to study and prepare for the written knowledge test before taking it. You can find study materials and practice tests online or through CDL training programs. Additionally, you can check with your local Secretary of State office to see if they offer any study materials or resources to help you prepare for the endorsement exam.
1. Pre-trip inspection: You will need to inspect the vehicle's coupling system, air lines, electrical cables, and safety equipment.
2. Coupling and uncoupling: You will need to properly couple and uncouple the tractor from the trailer(s).
3. Straight-line backing: You will need to back the vehicle in a straight line for a distance of 100 feet.
4. Off-set backing: You will need to back the vehicle through a 90-degree angle into a parking space.
5. Alley docking: You will need to back the vehicle into an alley dock between two barriers.
6. Road test: You will need to drive the vehicle on public roads while following all traffic laws and regulations.
During the skills test, you will be evaluated on your ability to safely operate doubles/triples and perform these maneuvers correctly and efficiently. It's important to practice these maneuvers before taking the test and seek out any training or instruction to help you prepare.
Operating a vehicle with double or triple trailers requires additional driving skills and knowledge to ensure safety on the road. The endorsement is designed to ensure that drivers have the necessary skills and knowledge to operate these vehicles safely.
If you are caught operating a vehicle with double or triple trailers without the proper endorsement, you may face fines and penalties. Additionally, if you are involved in an accident while driving a vehicle without the proper endorsement, your insurance may not cover any damages or injuries.
It's important to obtain the proper endorsements for the vehicles you plan to operate and follow all laws and regulations related to commercial driving.
Here are the steps to add the CDL Doubles/Triples endorsement to your existing CDL license in Michigan:
1. Study the CDL Doubles/Triples endorsement section of the Michigan Commercial Driver License Manual.
2. Schedule and pass the written test at a Secretary of State office. The written test covers topics such as coupling and uncoupling, inspecting double/triple trailers, and driving double/triple trailers.
3. Schedule and pass the skills test at a Secretary of State office. The skills test includes a pre-trip inspection, coupling and uncoupling, and driving maneuvers like straight-line backing, offset backing, and alley docking.
4. Pay the endorsement fee to add the CDL Doubles/Triples endorsement to your CDL license.
Once you have passed both tests and paid the fee, your CDL license will be updated to include the Doubles/Triples endorsement. You do not need to apply for a new license.
Drivers with a CDL Doubles/Triples endorsement are only allowed to operate vehicles with double or triple trailers. If a driver is operating a vehicle that does not have double or triple trailers, they must follow the rules and regulations of their regular CDL license.
Additionally, there are weight restrictions for vehicles with double or triple trailers. The maximum weight for a combination of vehicles with double or triple trailers is 80,000 pounds in Michigan.
It's important for drivers to understand the restrictions and limitations of their CDL license and endorsements to ensure they are operating vehicles legally and safely on the roads. Violating these restrictions can result in fines, penalties, and even the suspension or revocation of your CDL license.
1. Maximum weight: The combined weight of the double or triple trailers and the vehicle hauling them cannot exceed 80,000 pounds.
2. Maximum length: The total length of the double or triple trailers and the vehicle hauling them cannot exceed 100 feet.
It's important to note that these are the maximum weight and length limits allowed for double or triple trailers in Michigan. Drivers should always check with state and federal regulations before operating a commercial vehicle to ensure they are in compliance with all rules and regulations.
1. Proper coupling: Drivers must ensure the double/triple trailers are properly coupled and secured before hitting the road. This includes checking the locking jaws, safety chains, electrical connections, and trailer brakes.
2. Turning: Double/triple trailers require more space to turn than a single trailer. Drivers must be aware of the extra length and weight of their vehicle when turning and make sure they have enough space to complete the turn safely.
3. Braking: Double/triple trailers require more braking distance than a single trailer. Drivers must allow for additional stopping distance when approaching intersections, curves, or any other potential hazards.
4. Speed: Double/triple trailers have a lower speed limit than single trailers on most roads in Michigan. Drivers must be aware of the posted speed limits and adhere to them at all times.
5. Lane changes: Drivers must be careful when changing lanes with double/triple trailers, as they have a larger blind spot than single trailers. Always use your mirrors and signal well in advance when changing lanes.
6. Inspections: Drivers must perform pre-trip inspections before operating their vehicle and ensure all equipment is in good working condition.
Following these safety considerations and regulations can help ensure that drivers with a CDL Doubles/Triples endorsement operate their vehicles safely on Michigan roads while complying with state and federal regulations.