Double #1
Double Triple Test | Delaware 2026 #1
Train for FREE with our Delaware 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 DE CDL double triple 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 may vary from state to state.
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1 . If a truck is equipped, a trailer brake hand valve can be used to:
If a tractor-trailer is so equipped, the trailer brake hand valve can be used to stop the vehicle from rolling back when being started from a stop.
2 . To check the automatic transmission fluid level in some vehicles, you will have to:
In some vehicles, it may be necessary to leave the engine running when checking the automatic transmission fluid level.
3 . Driving a combination vehicle ____ than driving a single vehicle.
Is safer in inclement weather
Driving a combination vehicle usually requires more skill than driving a single vehicle. Combination vehicles are generally longer and heavier than single commercial vehicles.
4 . When starting an engine:
After a vehicle is started, the warning lights and buzzers should go out after a few seconds. If the warning signals do not turn off, there may be something wrong with the vehicle.
5 . Before a trip, you should make a visual check of a coupling to ensure that:
When performing a visual check of coupling devices, you should make sure there is no space between the upper and lower fifth wheel. Ensure that the locking jaws are securely closed around the kingpin.
6 . Black ice is:
Black ice is a layer of ice that is thin and clear enough for the road to be visible through it. The surface will look like a wet road. Always be alert to black ice if the road looks wet when the temperature is below freezing.
7 . To test the trailer service brakes, you should:
Move the vehicle forward slowly and apply the brakes with the hand control.
To test the trailer service brakes, you should first ensure that the braking system has a normal air pressure level, then release the parking brake. You should then move the vehicle forward slowly and apply the brakes with the hand control. If the trailer service brakes are working properly, you will feel the brakes activate.
2026 Delaware | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Delaware, you must already have a Commercial Driver's License (CDL). You'll then need to pass the doubles/triples endorsement knowledge test. Additionally, check if you need to meet any other specific requirements set by the Delaware Division of Motor Vehicles (DMV) such as age or experience criteria.
To obtain a CDL Doubles/Triples endorsement, you must already hold a Commercial Driver's License (CDL). You'll then need to pass a knowledge test on handling large trucks with more than one trailer. This will cover topics like coupling and uncoupling, inspecting doubles and triples, and handling these vehicles. Check with your local DMV for any additional requirements.
While having experience or training driving large trucks can be beneficial, it is not explicitly required for a CDL Doubles/Triples endorsement. However, you must pass a knowledge test on handling such vehicles. Some drivers choose to take a training course to prepare for the test, but this is not mandatory according to Delaware DMV regulations.
Yes, to obtain a CDL Doubles/Triples endorsement in Delaware, you must pass a written knowledge test. This test covers topics such as coupling and uncoupling, inspecting doubles and triples, and handling these vehicles. No additional driving skills test is required beyond the initial CDL exam.
The CDL Doubles/Triples endorsement test in Delaware is a written test, not a skills or driving test. Therefore, you won't need to showcase specific maneuvers. The test covers knowledge areas like handling double/triple trailers, coupling and uncoupling, inspection procedures, and air brake checks. It's important to study these topics thoroughly.
No, it is not permissible to operate double/triple trailers without a valid CDL Doubles/Triples endorsement in Delaware. Operating such vehicles without the appropriate endorsement can lead to serious penalties, including fines, license suspension, and potential disqualification from obtaining future endorsements.
You can add the CDL Doubles/Triples endorsement to your existing commercial driver's license in Delaware. You don't need to initiate a new application for a CDL. However, you must pass the required knowledge test and pay the necessary fees to obtain this endorsement. Always check with your local DMV for specific procedures and requirements.
Yes, there are limitations for drivers with a CDL Doubles/Triples endorsement in Delaware. Drivers must follow all federal and state regulations regarding weight limits, length restrictions, and safety protocols. Also, drivers with this endorsement are not allowed to operate other types of commercial vehicles unless they have the appropriate endorsements for those vehicles as well.
The maximum weight for double/triple trailers in Delaware is 80,000 pounds. The length limit for double trailers is 28.5 feet per trailer, and for triple trailers, it's 28.5 feet for the first two trailers and 28 feet for the third trailer. However, triple trailer combinations are generally not allowed on most roads in Delaware.
Yes, drivers with a CDL Doubles/Triples endorsement must adhere to specific safety regulations. These include conducting pre-trip inspections, securing the coupling devices properly, maintaining safe following distances, and understanding high-risk crash areas. Drivers must also comply with hours of service regulations and ensure proper loading and weight distribution of cargo.