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 Oregon Commercial Driver 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. You must have an air brake endorsement:
Explanation
You must take an air brakes knowledge test to become licensed to operate a vehicle that is equipped with air brakes, including an air over hydraulic braking system.
2. What can rust around the wheel nuts indicate?
Explanation
Rust around wheel nuts can indicate that they are loose. If you observe rust, check the tightness of the nuts.
3. If turning to avoid a hazard:
Explanation
If you are turning to avoid a hazard, do not apply the brakes while you are turning. This could easily lock the wheels and create a skid.
4. Poisonous fumes can enter the cab due to:
Explanation
Defects in an exhaust system are very dangerous because they can cause poisonous fumes to enter the cab or sleeper berth.
5. When trying to avoid a hazard:
Explanation
Stopping is not always the most effective response to a hazard. You can usually turn out of the path of a hazard more quickly than you can come to a complete stop. However, swerving is not without its hazards, as it may result in a rollover in a vehicle that is either top-heavy or pulling multiple trailers.
6. If coolant has to be added to a system without a recovery tank, you should:
Explanation
Before adding coolant to a system without a recovery or overflow tank, you must turn the engine off and wait until it cools. Use gloves or a thick cloth to protect your hands. To release the pressure seal, turn the radiator cap slowly to the first stop.
7. When completing pre-trip inspections:
Explanation
Pre-trip inspections should be conducted in the same way every time. This will reinforce the steps, making it less likely that you will forget to inspect something important.
Frequently Asked Questions
To obtain a CDL Doubles/Triples endorsement in Oregon, follow these steps:
1. Meet the eligibility requirements: You must be at least 18 years old, hold a valid Oregon Class A CDL, and pass a knowledge test on commercial driving regulations and safety procedures for driving double or triple trailers.
2. Study the Oregon Commercial Driver Manual: This manual provides information on driving double and triple trailers, as well as other topics related to commercial driving.
3. Schedule an appointment: Schedule an appointment at your local DMV office to take the knowledge test. You can make an appointment online or by calling the DMV.
4. Take the knowledge test: Be prepared to answer questions about coupling and uncoupling procedures, inspecting double/triple trailers, and safe driving practices for double/triple trailers.
5. Pay the fee: There is a fee for taking the knowledge test and obtaining the endorsement.
6. Pass a skills test (if required): If you are required to pass a skills test for double/triple trailers, you will need to schedule an appointment with an approved third-party tester.
7. Receive your endorsement: Once you have passed the knowledge test and any required skills tests, your CDL will be updated with the Doubles/Triples endorsement.
Remember to always follow safe driving practices when operating double or triple trailers on Oregon roads.
1. Meet the eligibility requirements: You must be at least 18 years old, hold a valid Oregon Class A CDL, and pass a knowledge test on commercial driving regulations and safety procedures for driving double or triple trailers.
2. Study the Oregon Commercial Driver Manual: This manual provides information on driving double and triple trailers, as well as other topics related to commercial driving.
3. Schedule an appointment: Schedule an appointment at your local DMV office to take the knowledge test. You can make an appointment online or by calling the DMV.
4. Take the knowledge test: Be prepared to answer questions about coupling and uncoupling procedures, inspecting double/triple trailers, and safe driving practices for double/triple trailers.
5. Pay the fee: There is a fee for taking the knowledge test and obtaining the endorsement.
6. Pass a skills test (if required): If you are required to pass a skills test for double/triple trailers, you will need to schedule an appointment with an approved third-party tester.
7. Receive your endorsement: Once you have passed the knowledge test and any required skills tests, your CDL will be updated with the Doubles/Triples endorsement.
Remember to always follow safe driving practices when operating double or triple trailers on Oregon roads.
To get a CDL Doubles/Triples license in Oregon, you must meet the following requirements:
1. Be at least 18 years old: You must be at least 18 years old to operate a commercial vehicle within Oregon, but you will be restricted to intrastate driving only.
2. Hold a valid Oregon Class A CDL: You must already have a valid Oregon Class A CDL to apply for the Doubles/Triples endorsement.
3. Pass a knowledge test: You must pass a knowledge test on commercial driving regulations and safety procedures for driving double or triple trailers.
4. Pass a skills test (if required): Depending on the type of vehicle you will be driving, you may need to pass a skills test that demonstrates your ability to safely operate double or triple trailers.
5. Pay the fee: There is a fee for taking the knowledge test and obtaining the endorsement.
It's important to note that driving double or triple trailers requires additional skills and knowledge compared to driving a single commercial vehicle. Be sure to study and practice safe driving practices before attempting to operate double or triple trailers on Oregon roads.
1. Be at least 18 years old: You must be at least 18 years old to operate a commercial vehicle within Oregon, but you will be restricted to intrastate driving only.
2. Hold a valid Oregon Class A CDL: You must already have a valid Oregon Class A CDL to apply for the Doubles/Triples endorsement.
3. Pass a knowledge test: You must pass a knowledge test on commercial driving regulations and safety procedures for driving double or triple trailers.
4. Pass a skills test (if required): Depending on the type of vehicle you will be driving, you may need to pass a skills test that demonstrates your ability to safely operate double or triple trailers.
5. Pay the fee: There is a fee for taking the knowledge test and obtaining the endorsement.
It's important to note that driving double or triple trailers requires additional skills and knowledge compared to driving a single commercial vehicle. Be sure to study and practice safe driving practices before attempting to operate double or triple trailers on Oregon roads.
In Oregon, there is no specific training or experience requirement to obtain a CDL Doubles/Triples endorsement. However, it is highly recommended that you have some experience driving a commercial vehicle before attempting to drive double or triple trailers.
You should also study the Oregon Commercial Driver Manual, which provides information on driving double and triple trailers, as well as other topics related to commercial driving. Additionally, some employers may require you to have specific training or experience before operating double or triple trailers on the job.
It's important to remember that driving double or triple trailers requires additional skills and knowledge compared to driving a single commercial vehicle. Be sure to practice safe driving practices and follow all regulations when operating double or triple trailers on Oregon roads.
You should also study the Oregon Commercial Driver Manual, which provides information on driving double and triple trailers, as well as other topics related to commercial driving. Additionally, some employers may require you to have specific training or experience before operating double or triple trailers on the job.
It's important to remember that driving double or triple trailers requires additional skills and knowledge compared to driving a single commercial vehicle. Be sure to practice safe driving practices and follow all regulations when operating double or triple trailers on Oregon roads.
Yes, there is an additional written test that you will need to pass to obtain the CDL Doubles/Triples endorsement in Oregon. The test covers specific knowledge related to driving double or triple trailers, such as:
1. Checking air brakes and electrical connections on multiple trailers
2. Maneuvering and backing up with multiple trailers
3. Coupling and uncoupling multiple trailers
4. Understanding the increased risks associated with driving multiple trailers
The test may also cover general knowledge topics related to commercial driving, such as air brakes, combination vehicles, and hazardous materials.
It's important to study the Oregon Commercial Driver Manual thoroughly before taking the written test. You can also take practice tests to help prepare for the exam. Once you have passed the written test and any required skills tests, you will be issued a CDL Doubles/Triples endorsement, which will allow you to legally operate double or triple trailers in Oregon.
1. Checking air brakes and electrical connections on multiple trailers
2. Maneuvering and backing up with multiple trailers
3. Coupling and uncoupling multiple trailers
4. Understanding the increased risks associated with driving multiple trailers
The test may also cover general knowledge topics related to commercial driving, such as air brakes, combination vehicles, and hazardous materials.
It's important to study the Oregon Commercial Driver Manual thoroughly before taking the written test. You can also take practice tests to help prepare for the exam. Once you have passed the written test and any required skills tests, you will be issued a CDL Doubles/Triples endorsement, which will allow you to legally operate double or triple trailers in Oregon.
To obtain the CDL Doubles/Triples endorsement in Oregon, you will need to complete a skills test that includes demonstrating specific maneuvers related to driving double or triple trailers. The skills test will typically include the following:
1. Pre-Trip Inspection: You will need to perform a pre-trip inspection of your vehicle, including checking the air brakes, electrical connections, coupling devices, and any other equipment related to driving multiple trailers.
2. Coupling and Uncoupling: You will need to demonstrate your ability to properly couple and uncouple multiple trailers, including selecting the proper equipment and verifying that all connections are secure.
3. Straight Line Backing: You will need to back up your vehicle in a straight line for a specified distance. This maneuver demonstrates your ability to control your vehicle while driving multiple trailers.
4. Offset Backing: You will need to back up your vehicle into a designated space at an angle. This maneuver demonstrates your ability to maneuver your vehicle in tight spaces while driving multiple trailers.
5. Alley Docking: You will need to back up your vehicle into a designated space between two barriers. This maneuver demonstrates your ability to navigate tight spaces while driving multiple trailers.
6. Driving Skills Test: Finally, you will need to demonstrate your ability to safely operate your vehicle on the road while driving multiple trailers. This may include demonstrating maneuvers such as merging onto a highway, changing lanes, and navigating turns.
It's important to practice these maneuvers extensively before taking the skills test and to carefully follow all instructions provided by the examiner during the test. With proper preparation and practice, you can successfully obtain the CDL Doubles/Triples endorsement in Oregon and safely operate double or triple trailers on the road.
1. Pre-Trip Inspection: You will need to perform a pre-trip inspection of your vehicle, including checking the air brakes, electrical connections, coupling devices, and any other equipment related to driving multiple trailers.
2. Coupling and Uncoupling: You will need to demonstrate your ability to properly couple and uncouple multiple trailers, including selecting the proper equipment and verifying that all connections are secure.
3. Straight Line Backing: You will need to back up your vehicle in a straight line for a specified distance. This maneuver demonstrates your ability to control your vehicle while driving multiple trailers.
4. Offset Backing: You will need to back up your vehicle into a designated space at an angle. This maneuver demonstrates your ability to maneuver your vehicle in tight spaces while driving multiple trailers.
5. Alley Docking: You will need to back up your vehicle into a designated space between two barriers. This maneuver demonstrates your ability to navigate tight spaces while driving multiple trailers.
6. Driving Skills Test: Finally, you will need to demonstrate your ability to safely operate your vehicle on the road while driving multiple trailers. This may include demonstrating maneuvers such as merging onto a highway, changing lanes, and navigating turns.
It's important to practice these maneuvers extensively before taking the skills test and to carefully follow all instructions provided by the examiner during the test. With proper preparation and practice, you can successfully obtain the CDL Doubles/Triples endorsement in Oregon and safely operate double or triple trailers on the road.
No, you cannot legally operate double or triple trailers without a CDL Doubles/Triples endorsement in Oregon. The endorsement is required by federal law for anyone who operates a commercial vehicle with two or three trailers, and failure to obtain the endorsement can result in fines, penalties, and even the suspension or revocation of your commercial driver's license.
To obtain the Doubles/Triples endorsement, you will need to pass a written test and a skills test that demonstrates your proficiency in handling multiple trailers. It's important to study the Oregon Commercial Driver Manual carefully and practice the required maneuvers extensively before taking the tests.
Once you have obtained the CDL Doubles/Triples endorsement, you will be authorized to operate double or triple trailers in Oregon as long as you comply with all state and federal regulations governing commercial driving. This includes complying with weight restrictions, adhering to hours-of-service requirements, and following all traffic laws and safety regulations.
To obtain the Doubles/Triples endorsement, you will need to pass a written test and a skills test that demonstrates your proficiency in handling multiple trailers. It's important to study the Oregon Commercial Driver Manual carefully and practice the required maneuvers extensively before taking the tests.
Once you have obtained the CDL Doubles/Triples endorsement, you will be authorized to operate double or triple trailers in Oregon as long as you comply with all state and federal regulations governing commercial driving. This includes complying with weight restrictions, adhering to hours-of-service requirements, and following all traffic laws and safety regulations.
In Oregon, 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 a written test and a skills test that demonstrates your proficiency in handling multiple trailers.
You can schedule an appointment for the Doubles/Triples skills test at a DMV office in Oregon. Before your skills test appointment, you will need to pass the Doubles/Triples written test. You can study for the written test by reviewing the Oregon Commercial Driver Manual and taking practice tests online.
Once you have passed both the written and skills tests, DMV will add the Doubles/Triples endorsement to your existing CDL license.
It's important to note that there may be additional fees associated with adding the endorsement to your CDL license, and you may also need to provide proof of insurance and other documentation. Be sure to check with DMV for specific requirements and fees related to adding the endorsement to your CDL license in Oregon.
You can schedule an appointment for the Doubles/Triples skills test at a DMV office in Oregon. Before your skills test appointment, you will need to pass the Doubles/Triples written test. You can study for the written test by reviewing the Oregon Commercial Driver Manual and taking practice tests online.
Once you have passed both the written and skills tests, DMV will add the Doubles/Triples endorsement to your existing CDL license.
It's important to note that there may be additional fees associated with adding the endorsement to your CDL license, and you may also need to provide proof of insurance and other documentation. Be sure to check with DMV for specific requirements and fees related to adding the endorsement to your CDL license in Oregon.
Yes, there are restrictions and limitations for drivers with a CDL Doubles/Triples endorsement in Oregon. These restrictions and limitations are in place to ensure the safety of the driver, other motorists, and pedestrians.
One common restriction is related to weight. In Oregon, the maximum weight for a commercial vehicle with two or three trailers is 105,500 pounds. Drivers with a Doubles/Triples endorsement must also comply with all other weight restrictions and regulations as outlined in the Oregon Commercial Driver Manual.
Another limitation is related to the types of roads that drivers can operate on. In some cases, drivers of double or triple trailers may be prohibited from operating on certain roads or highways due to safety concerns or local regulations.
Additionally, drivers with a Doubles/Triples endorsement must comply with all hours-of-service regulations and other safety requirements as outlined in state and federal law. This includes taking required breaks and complying with maximum driving time limits.
It's important for drivers with a CDL Doubles/Triples endorsement to stay up-to-date on all regulations and requirements related to commercial driving in Oregon. This can help ensure their own safety, as well as the safety of others on the road.
One common restriction is related to weight. In Oregon, the maximum weight for a commercial vehicle with two or three trailers is 105,500 pounds. Drivers with a Doubles/Triples endorsement must also comply with all other weight restrictions and regulations as outlined in the Oregon Commercial Driver Manual.
Another limitation is related to the types of roads that drivers can operate on. In some cases, drivers of double or triple trailers may be prohibited from operating on certain roads or highways due to safety concerns or local regulations.
Additionally, drivers with a Doubles/Triples endorsement must comply with all hours-of-service regulations and other safety requirements as outlined in state and federal law. This includes taking required breaks and complying with maximum driving time limits.
It's important for drivers with a CDL Doubles/Triples endorsement to stay up-to-date on all regulations and requirements related to commercial driving in Oregon. This can help ensure their own safety, as well as the safety of others on the road.
In Oregon, there are specific weight and length limits for double/triple trailers that drivers with a CDL Doubles/Triples endorsement must comply with. These limits are in place to ensure the safety of the driver, other motorists, and pedestrians.
The maximum weight for a commercial vehicle with two or three trailers in Oregon is 105,500 pounds. This includes the weight of the vehicle, trailers, cargo, and any other equipment or materials being transported.
Additionally, there are specific length limitations for double/triple trailers in Oregon. The maximum length for a combination of two vehicles is 75 feet, while the maximum length for a combination of three vehicles is 80 feet.
Drivers with a Doubles/Triples endorsement must comply with all other weight restrictions and regulations as outlined in the Oregon Commercial Driver Manual. It's important for drivers to be aware of these limits and restrictions to ensure their own safety, as well as the safety of others on the road.
The maximum weight for a commercial vehicle with two or three trailers in Oregon is 105,500 pounds. This includes the weight of the vehicle, trailers, cargo, and any other equipment or materials being transported.
Additionally, there are specific length limitations for double/triple trailers in Oregon. The maximum length for a combination of two vehicles is 75 feet, while the maximum length for a combination of three vehicles is 80 feet.
Drivers with a Doubles/Triples endorsement must comply with all other weight restrictions and regulations as outlined in the Oregon Commercial Driver Manual. It's important for drivers to be aware of these limits and restrictions to ensure their own safety, as well as the safety of others on the road.
Yes, there are specific safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement in Oregon. These regulations are designed to ensure the safety of the driver, other motorists, and pedestrians.
Here are some of the safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement in Oregon:
1. Weight Limits: As mentioned earlier, the maximum weight for a commercial vehicle with two or three trailers in Oregon is 105,500 pounds. Drivers must comply with all weight restrictions and regulations as outlined in the Oregon Commercial Driver Manual.
2. Length Limits: The maximum length for a combination of two vehicles is 75 feet, while the maximum length for a combination of three vehicles is 80 feet.
3. Braking Systems: Double/triple trailers require an adequate braking system to ensure safe operation. The brake systems must be properly maintained and functioning at all times.
4. Turning Radius: Double/triple trailers have a larger turning radius than regular commercial vehicles, making it essential for drivers to pay close attention to their surroundings when making turns.
5. Driving Techniques: Drivers with a Doubles/Triples endorsement must have in-depth knowledge of driving techniques specific to double/triple trailers. This includes techniques for backing up, turning, and maintaining control while driving.
6. Hours-of-Service Regulations: Drivers must comply with all hours-of-service regulations as outlined in state and federal law. This includes taking required breaks and complying with maximum driving time limits.
It's important for drivers with a CDL Doubles/Triples endorsement to stay up-to-date on all regulations and requirements related to commercial driving in Oregon. This can help ensure their own safety, as well as the safety of others on the road.
Here are some of the safety considerations and regulations for driving double/triple trailers with a CDL Doubles/Triples endorsement in Oregon:
1. Weight Limits: As mentioned earlier, the maximum weight for a commercial vehicle with two or three trailers in Oregon is 105,500 pounds. Drivers must comply with all weight restrictions and regulations as outlined in the Oregon Commercial Driver Manual.
2. Length Limits: The maximum length for a combination of two vehicles is 75 feet, while the maximum length for a combination of three vehicles is 80 feet.
3. Braking Systems: Double/triple trailers require an adequate braking system to ensure safe operation. The brake systems must be properly maintained and functioning at all times.
4. Turning Radius: Double/triple trailers have a larger turning radius than regular commercial vehicles, making it essential for drivers to pay close attention to their surroundings when making turns.
5. Driving Techniques: Drivers with a Doubles/Triples endorsement must have in-depth knowledge of driving techniques specific to double/triple trailers. This includes techniques for backing up, turning, and maintaining control while driving.
6. Hours-of-Service Regulations: Drivers must comply with all hours-of-service regulations as outlined in state and federal law. This includes taking required breaks and complying with maximum driving time limits.
It's important for drivers with a CDL Doubles/Triples endorsement to stay up-to-date on all regulations and requirements related to commercial driving in Oregon. This can help ensure their own safety, as well as the safety of others on the road.
