Tank #2
Tank Endorsement Test | North Dakota 2026 #2
Train for FREE with our North Dakota tank endorsement practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a ND tank license in 2026, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements for issuing a CDL tank vehicle endorsement may vary from state to state.
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1 . At what psi is the safety valve set to open?
500 psi
In an air brake system, the first tank that receives compressed air has a safety valve that releases air if the pressure gets too high. It is usually set to open at 150 psi. If the valve must open, there is a fault in the system that should be repaired by a mechanic.
2 . Which of the following is not a type of retarder?
Electric
Retarders are mechanisms in some vehicles that help slow a vehicle and reduce the need for braking. The four basic types of retarders are exhaust, engine, hydraulic, and electric.
3 . When backing in an unfamiliar area, using driver-side backing is:
Illegal when transporting hazardous materials.
If you must back up, it is safest to back toward the driver's side of the vehicle. This way, as the driver, you will have the best possible view of your path of travel.
4 . If driving in a foggy area, you should not:
Turn on your four-way flashers.
It is safest not to drive in foggy areas. However, if you must drive through fog, you should slow down, use your low beam headlights and fog lights, and turn on your four-way flashers.
5 . What do bulkheads do?
Provide extra storage in a tank
Bulkheads divide a large tank into multiple smaller tanks. A driver must pay special attention to weight distribution when driving a tank vehicle that has been separated by bulkheads.
6 . Which of the following is not a rule for using turn signals?
Don’t signal unless another vehicle is close.
Always signal before a turn or lane change. Begin signaling well in advance of the movement and keep the signal on continuously during the turn. If it is not self-canceling, make sure to turn your signal off after your turn or lane change is complete.
7 . The controlled braking method is:
When the driver downshifts the gears to brake.
The method of controlled braking involves applying the brakes as hard as you can without locking the wheels. If you need to make large steering adjustments while using controlled braking, you should remove your foot from the brake pedal, steer, then reapply the brakes.
2026 North Dakota | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in North Dakota, you must first hold a valid Commercial Driver's License (CDL). Then, you will need to pass the Doubles/Triples Knowledge test. The test covers topics like coupling and uncoupling, inspecting doubles and triples, and handling. After passing this test, the endorsement will be added to your CDL.
To obtain a CDL Doubles/Triples license, you first need a valid Commercial Driver's License (CDL). Then, you must pass the Doubles/Triples Knowledge Test. This test covers topics such as coupling and uncoupling, inspecting doubles and triples, and handling. After passing the test, the Doubles/Triples endorsement will be added to your CDL.
While North Dakota does not mandate specific training for a CDL Doubles/Triples endorsement, they do require passing the Doubles/Triples Knowledge Test. However, practical training can be beneficial for understanding coupling/uncoupling, inspecting, and handling doubles/triples. Some drivers opt for professional training programs to enhance their skills and increase their chances of passing the test.
Yes, in North Dakota, to obtain a CDL Doubles/Triples endorsement, you must pass the Doubles/Triples Knowledge Test. This written exam covers topics like coupling and uncoupling, inspecting doubles and triples, and handling. The endorsement is added to your CDL after you successfully pass this exam.
The CDL Doubles/Triples endorsement test in North Dakota is a knowledge test, not a skills test. It focuses on understanding specific rules and procedures related to operating such vehicles. Topics include coupling and uncoupling, inspecting doubles and triples, and crucial handling differences. Practical skills or maneuvers are not demonstrated during this written test.
No, it's not permissible. In North Dakota, like in all other states, you must have a valid CDL Doubles/Triples endorsement to legally operate double or triple trailers. Driving without the appropriate CDL endorsement is a violation and could result in fines, penalties, and potential disqualification from driving commercial vehicles.
You can append the CDL Doubles/Triples endorsement to your current commercial driver's license in North Dakota. You don't need to initiate a new application for a CDL. However, you must pass the Doubles/Triples Knowledge Test to get the endorsement. Once you pass, the endorsement is added to your existing CDL.
Yes, there are constraints. Drivers with a CDL Doubles/Triples endorsement in North Dakota must only operate vehicles that their license classifies. For instance, a Class B CDL holder can't operate a Class A vehicle. Additionally, all federal and state regulations regarding hours of service, vehicle maintenance, and safety must be strictly adhered to.
In North Dakota, double trailers can't exceed 81 feet in overall length. For weight, the maximum gross vehicle weight (GVW) is 105,500 lbs. However, specific weight depends on the vehicle's axle configuration. Triple trailers are not generally permitted unless on specific routes or for emergency relief efforts. Always check with the Department of Transportation for up-to-date regulations.
Yes, drivers with a CDL Doubles/Triples endorsement must follow specific safety guidelines. These include conducting pre-trip safety inspections, ensuring the correct coupling and uncoupling of trailers, and managing the high rollover risk associated with these vehicles. Drivers must also be aware of the increased stopping distance required for double/triple trailers and adjust their driving accordingly.