Combination #2
Combination Vehicles Practice Test | Illinois 2025 #2 Page 2 of 3
Train for FREE online with our Illinois CDL combination vehicle test. 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 IL combination 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 for issuing a combination license may vary from state to state.
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8 . When backing up to couple a trailer, you should position the tractor:
At a 60-degree angle in front of the trailer.
When backing up to couple a trailer, you should position the tractor directly in front of the trailer. Trying to couple while backing at an angle could cause the trailer to move and the landing gear to break.
9 . To help prevent a rollover, cargo should be:
Placed on the driver’s side of the trailer.
To reduce the risk of a rollover, the weight of cargo in a trailer should be kept as low to the ground as possible. Weight should not be placed primarily on one side of the trailer as this could make the trailer lean, increasing the risk of a rollover.
10 . The best way to recognize that your trailer has begun to skid is by:
Listening to the radio.
The earliest and best way to recognize the beginnings of a trailer skid is by seeing the trailer veer off-course in your mirrors.
11 . Proper coupling technique:
Can be learned over time.
Knowing proper coupling and uncoupling technique is fundamental to the safe operation of combination vehicles. Improper coupling can be very dangerous.
12 . To prevent a rollover, cargo should be:
Loaded with most weight on the driver’s side of a trailer.
To reduce the risk of rollover, the weight of cargo in a trailer should be centered and spread out as much as possible. The weight of the cargo should also be kept as low to the ground as possible.
13 . If you need to back your trailer but cannot back up in a straight path, you should:
Always turn to your right.
If you need to back your trailer but cannot back up in a straight path, you should back on a curved path toward the driver's side of the vehicle. This will permit you the best possible visibility while backing.
14 . How many air lines does a combination vehicle have?
Four
Every combination vehicle has two air lines: the service line and the emergency line.
2025 Illinois | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Illinois, you must already have a CDL license. Then, study the Illinois CDL handbook's section on double/triple trailers. Afterward, schedule an endorsement test at a local Secretary of State Facility. Passing this test adds the Doubles/Triples endorsement to your CDL. Remember, driving experience with such trailers cannot replace this test.
To obtain a CDL Doubles/Triples license, you need to have a valid Commercial Driver's License (CDL). You then need to study the relevant sections in the CDL manual, specifically focusing on double and triple trailers. After studying, schedule and pass the Doubles/Triples endorsement test at your local DMV. Some states may also require proof of training or experience.
While specific requirements may vary by state, generally, you do not need specialized experience or training for a CDL Doubles/Triples endorsement. However, you must hold a valid Commercial Driver's License (CDL). You'll need to study the Doubles and Triples section of your state's CDL manual and pass the endorsement knowledge test at your local DMV.
Yes, to obtain a CDL Doubles/Triples endorsement in Illinois, you must pass an additional written test. This test covers the specific knowledge required for pulling double or triple trailers. The information for this test can be found in the specialized section of the Illinois CDL handbook. No extra road skills test is required for this endorsement.
Actually, in Illinois, there's no specific road skills test for the Doubles/Triples endorsement. The process primarily involves a written knowledge test. This test focuses on topics like coupling and uncoupling, inspecting doubles and triples, and crucial driving skills for these types of vehicles. However, practical ability to handle these vehicles safely is beneficial.
No, it's not permissible to operate double/triple trailers without a valid CDL Doubles/Triples endorsement in Illinois. Driving these types of vehicles requires specialized knowledge and skills. Therefore, you must pass the Doubles/Triples Endorsement Knowledge Test to legally operate such vehicles. Failure to do so can result in penalties, including fines and suspension of your commercial driving privileges.
You can add the Doubles/Triples endorsement to your current CDL. You do not need to initiate a new application for a CDL license. However, you'll need to pass the Doubles/Triples written knowledge test. Once you pass, the endorsement will be added to your existing CDL. Remember, each state may have specific fees for adding endorsements.
Yes, there are some limitations. A CDL Doubles/Triples endorsement allows you to operate vehicles with more than one trailer, but it doesn't permit the operation of all types of commercial vehicles. For example, you would need separate endorsements to operate a school bus, tanker vehicle, or to transport hazardous materials. Additionally, all standard CDL regulations and restrictions still apply.
In Illinois, the maximum length for a semi-trailer is 53 feet, and for each trailer in a double/triple setup, it's 28.5 feet. The gross vehicle weight limit is 80,000 lbs. However, these limits can vary depending on the type of highways and roads used. It's always best to check with local authorities or the Illinois Department of Transportation for specific restrictions.
Yes, there are specific safety guidelines. Drivers must check coupling systems regularly, maintain a safe following distance, be extra cautious in bad weather, and ensure the heaviest trailer is first. Additionally, they must comply with federal and state regulations, including hours of service rules, vehicle inspection requirements, and proper cargo securement. Remember to always prioritize safety over speed or schedule.