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Double Triple Test | Idaho 2025 #2 Page 3 of 3
Train for FREE with our Idaho CDL double triple 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 ID CDL double triple license in 2025, 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 may vary from state to state.
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15 . A low air pressure warning signal should activate:
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
16 . A truck should be parked:
Because you can't see everything behind you, backing is always dangerous and should be avoided whenever possible. Choose parking spaces from which you can pull forward when you leave.
17 . What should you do if the braking system cannot build up hydraulic pressure?
If your hydraulic braking system will not build up the pressure needed to slow or stop your vehicle, there are a few possible solutions. Try shifting into a lower gear, pumping the brakes, and/or using the emergency brake.
18 . If the coolant temperature gauge goes above the highest safe temperature, you should:
If the coolant temperature gauge goes above the highest safe temperature, you should stop driving as soon as possible and try to figure out what is wrong. There could be an issue in your vehicle that could lead to engine failure and possibly a fire.
19 . Braking mechanisms are located inside:
Drum brakes are attached to the wheels and located on the axles of a vehicle. The braking mechanisms that cause the vehicle to stop can be found inside of a drum brake.
20 . When loading a trailer, you should:
A load of cargo must be properly balanced. Placing too much weight over an axle can damage the axle and make it more difficult for you to steer. Placing too little weight over an axle can cause poor traction, also leading to difficult handling.
See the exact questions that will be on the 2025 Idaho DMV exam.
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2025 Idaho | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Idaho, you need to have a valid commercial driver's license (CDL). You will then need to pass the Doubles/Triples Knowledge Test offered by the Idaho Transportation Department. It's also recommended to practice with a qualified trainer before the test to ensure you understand how to safely operate these types of vehicles.
To obtain a CDL Doubles/Triples license, you must already hold a Commercial Driver's License (CDL). You'll need to pass the Doubles/Triples Knowledge Test, which covers coupling and uncoupling, inspecting doubles and triples, and checking air brakes. It's also recommended to have some hands-on training with a qualified instructor to ensure you can safely operate these vehicles.
While Idaho does not specifically require specialized experience or training for a CDL Doubles/Triples endorsement, it is highly recommended. Understanding how to handle these types of vehicles, how to couple and uncouple, and inspecting the vehicle are crucial. This knowledge can be gained through hands-on training with a qualified instructor and studying the CDL manual.
Yes, to obtain a CDL Doubles/Triples endorsement in Idaho, you are required to pass the Doubles/Triples Knowledge Test. This written exam focuses on the specific knowledge and skills needed to safely operate double and triple trailers, including coupling and uncoupling, vehicle inspections, and managing cargo.
During the CDL Doubles/Triples endorsement test in Idaho, you won't have to showcase specific driving skills or maneuvers. The test is knowledge-based and covers topics like coupling and uncoupling, inspecting doubles and triples, and managing cargo. However, practical skills like safely driving, turning, and parking these vehicles are crucial for real-world application.
No, it is not permissible to operate double or triple trailers without a valid CDL Doubles/Triples endorsement in Idaho. This endorsement is required by federal and state law to ensure that drivers have the necessary skills and knowledge to safely operate these larger, more complex vehicles. Operating without the endorsement can result in fines and penalties.
You can append the CDL Doubles/Triples endorsement to your current commercial driver's license. You don't need to initiate a new application for a CDL. However, you must pass the Doubles/Triples Knowledge Test. Once passed, the endorsement will be added to your existing CDL.
Drivers with a CDL Doubles/Triples endorsement must adhere to specific rules. These include restrictions on the maximum combined length of the trailers and the requirement to only drive these vehicles on designated highways. Also, they must follow all general CDL regulations, including hours of service rules, vehicle inspection requirements, and maintaining a clean driving record.
In Idaho, the maximum weight for a commercial vehicle, including double or triple trailers, is 105,500 lbs. The maximum length for a double trailer is 61 feet for the two trailers combined. Triple trailers are not generally permitted except on designated highways and they cannot exceed 95 feet in total length. These restrictions can change, so always check the current regulations.
Yes, there are specific safety guidelines for driving double/triple trailers. Drivers must maintain a safe following distance, anticipate stops, and avoid sudden lane changes. They should also be mindful of the "crack-the-whip" effect during turns. Regular vehicle inspections are mandatory to ensure brake system integrity and correct weight distribution. Additionally, drivers must comply with all CDL rules and federal regulations.
