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. Each question has four answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the New York State Commercial Motor Vehicle Drivers Handbook. 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. The easiest way to recognize that your trailer has begun to skid is to:
The easiest way to spot a trailer skid is to use your mirrors. Any time you brake hard, check your mirrors to ensure that your trailer is still in its proper position.
2. The trailer hand valve should:
The trailer hand valve works the trailer brakes but should only be used when testing them. Using it while driving could create a skid. Never use the trailer hand valve while parking because doing so may release the air pressure from the braking system, releasing the brakes that are holding the vehicle in place.
3. The service air line is attached to the:
The service air line carries air and is controlled by either the foot brake or trailer hand brake. The service air line is attached to relay valves, which allow the trailer brakes to be applied quickly.
4. A vehicle equipped with an Anti-Lock Braking System (ABS) can be identified by:
You can tell that your vehicle is equipped with an Anti-Lock Braking System (ABS) if it has a yellow ABS malfunction lamp on the instrument panel.
5. For safety purposes, when should you turn off a retarder?
Retarders are mechanisms in some vehicles that help slow a vehicle and reduce the need for braking. However, using a retarder may cause wheels to skid when they have poor traction. Turn off retarders when traveling under wet, snowy, or icy conditions.
6. To avoid becoming an aggressive driver, you should:
To avoid becoming an aggressive driver, begin a trip with realistic expectations of how long the trip will take, allowing extra time for traffic delays. Do not tailgate other vehicles. To avoid upsetting other drivers, do not drive slowly in the left lane and do not gesture at the drivers (even in seemingly minor ways, like shaking your head).
7. If confronted by an aggressive driver, you should:
If confronted by an aggressive driver, the most important thing to do is try to get out of their way. Avoid making eye contact with the driver and do not let yourself be provoked by gestures. Do not try to challenge aggressive drivers by speeding up.
Frequently Asked Questions
1. Obtain a valid New York State commercial driver's license (CDL).
2. Study the New York State Commercial Driver's Manual and specifically review the section on Doubles and Triples.
3. Schedule an appointment to take the CDL Doubles/Triples endorsement written test at a Department of Motor Vehicles (DMV) office.
4. Pay the appropriate fee for the test.
5. Pass the written test with a score of 80% or higher.
6. If you pass the test, you will be given a temporary paper license with your new endorsement added.
7. Your permanent license will be mailed to you within two weeks.
It is important to note that to be eligible for a Doubles/Triples endorsement, you must have a valid CDL and meet certain requirements, such as having a clean driving record and being able to pass a background check.
1. Be at least 21 years old.
2. Possess a valid New York State CDL.
3. Pass the CDL Doubles/Triples endorsement written test.
4. Have a clean driving record with no serious traffic violations.
5. Pass a medical examination and obtain a medical certificate.
6. Provide proof of citizenship or lawful permanent residency in the United States.
7. Meet the requirements for driving commercial vehicles as set forth by the Federal Motor Carrier Safety Administration (FMCSA).
It is important to note that New York State also requires a road test to be completed in a commercial vehicle equipped with the type of double/triple trailer that you will be driving, before you can add the Doubles/Triples endorsement to your license.
The FMCSA also requires that you hold a valid CDL for at least 14 days before taking the skills test. During this time, you will need to practice driving with a qualified driver who already possesses the Doubles/Triples endorsement.
In addition, some employers may require additional training or experience beyond what is required by the FMCSA and New York State. It is important to check with your employer or potential employers to determine their specific requirements.
1. The differences between double and triple trailers.
2. How to inspect double and triple trailers.
3. How to couple and uncouple double and triple trailers.
4. How to safely drive double and triple trailers, including turning, braking, and backing up.
5. The legal weight limits for double and triple trailers.
The Doubles/Triples endorsement written test is in addition to the general knowledge test that is required for all CDL applicants. It is important to study the New York State Commercial Driver’s Manual thoroughly before taking the written tests.
1. Inspection: You will need to conduct a thorough inspection of your double/triple trailer, including checking brakes, coupling devices, lights, and tires.
2. Coupling and uncoupling: You will need to properly couple and uncouple the double/triple trailer.
3. Straight line backing: You will need to back up your vehicle in a straight line for a specific distance.
4. Off-set backing: You will need to back up your vehicle into a space to the left or right of your vehicle.
5. Parallel parking: You will need to back up your vehicle into a space that is parallel to the curb or other vehicles.
6. Turning: You will need to make both left and right turns with your double/triple trailer, including demonstrating proper lane positioning and signaling.
7. Accelerating and braking: You will need to demonstrate proper acceleration and braking techniques with your double/triple trailer.
It is important to practice these skills with a qualified driver before taking the CDL Doubles/Triples endorsement skills test in order to increase your chances of passing.
To obtain the Doubles/Triples endorsement, you must pass both a written test and a skills test specific to driving double/triple trailers. The written test covers topics such as inspection, coupling and uncoupling, turning, and weight limits. The skills test includes several maneuvers, including backing up and turning.
It is important to note that operating double/triple trailers without the proper endorsement can result in serious consequences, including fines and license suspension. It is important to obtain the proper training and endorsements before operating any commercial vehicle on the roadways.
To add the Doubles/Triples endorsement, you will need to visit your local DMV office and provide proof of identity and residency, as well as your current CDL license. You will also need to pay the required fee for the endorsement.
Once you have passed the required tests and paid the fee, the Doubles/Triples endorsement will be added to your existing CDL license. It is important to note that you must renew your CDL with the Doubles/Triples endorsement every four years, just like you would with a regular CDL license.
Keep in mind that obtaining the Doubles/Triples endorsement requires specific training and knowledge related to driving double/triple trailers, and it is important to prepare for the tests thoroughly in order to pass and operate these vehicles safely on the roadways.
In New York, drivers with a CDL Doubles/Triples endorsement are authorized to operate combination vehicles with two or three trailers. However, there are certain restrictions and limitations that apply to these drivers.
Some of the restrictions and limitations for drivers with a CDL Doubles/Triples endorsement include:
1. Vehicle weight limits: Drivers with the Doubles/Triples endorsement must adhere to weight limits for the combination of vehicles they are operating.
2. Maximum length: Drivers with the Doubles/Triples endorsement are limited to a maximum length for the combination of vehicles they are operating.
3. Turning restrictions: Drivers with the Doubles/Triples endorsement must be aware of turning restrictions and maneuver the vehicle combination safely in tight spaces.
4. Braking limitations: Drivers with the Doubles/Triples endorsement must be familiar with braking limitations and adjust their driving accordingly.
It is important for drivers with the Doubles/Triples endorsement to be aware of these restrictions and limitations and operate their vehicles safely and responsibly on the roadways.
The maximum weight limit for a combination of double/triple trailers is 80,000 pounds. However, this limit may be lower depending on the weight limit of the individual trailers and the towing vehicle. Drivers with a CDL Doubles/Triples endorsement must be familiar with the weight limits of their specific vehicle combination and ensure that they do not exceed the maximum weight limit.
The maximum length for a combination of double/triple trailers is 68 feet. This includes the length of both the towing vehicle and all trailers in the combination. Drivers with a CDL Doubles/Triples endorsement must ensure that their vehicle combination does not exceed this maximum length limit.
It is important for drivers with a CDL Doubles/Triples endorsement to be familiar with these weight and length limits and operate their vehicles safely and responsibly on the roadways. Exceeding these limits can result in fines, penalties, and safety hazards on the roadways.
Some of the specific safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement are:
1. Turning restrictions: Drivers must be aware of turning restrictions and make turns cautiously. Double/triple trailers require more space to turn, and drivers must take this into account when navigating tight turns.
2. Braking limitations: Drivers must be familiar with the limitations of their vehicle's braking system and adjust their driving accordingly. Double/triple trailers require more time to stop due to their weight and length.
3. Reduced speed limits: Drivers must adhere to reduced speed limits when operating double/triple trailers.
4. Increased stopping distance: Drivers must maintain a greater distance between their vehicle and other vehicles on the road due to the increased stopping distance required for double/triple trailers.
5. Proper maintenance: Drivers must ensure that their vehicle is properly maintained and inspected regularly to ensure its safe operation on the road.
It is important for drivers with a CDL Doubles/Triples endorsement to be familiar with these safety considerations and regulations and operate their vehicles safely and responsibly on the roadways. Failure to adhere to these regulations can result in fines, penalties, and safety hazards on the roadways.