Combination #1
Combination Vehicles Practice Test | Ohio 2025 #1 Page 3 of 3
Train for FREE online with our Ohio 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 OH 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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15 . If you use the trailer hand brake while your trailer is skidding, it will:
If you are experiencing a trailer jackknife, you can help your tires regain traction by releasing the brakes. Using a trailer hand brake while experiencing a skid will only cause the skid to continue.
16 . The trailer hand valve should be used:
The trailer hand valve (also referred to as the "trolley valve" or "Johnson bar") works the trailer brakes and should be used only when testing them. Using the trailer hand valve while driving could result in a skid.
17 . Operating combination vehicles usually requires ____ operating single vehicles.
Combination vehicles are usually heavier and longer than single combination vehicles. Operating a combination vehicle requires a higher level of driving skill than operating a single commercial vehicle.
18 . The trailer hand valve should not be used while you are driving because:
Never use the trailer hand valve while operating your vehicle. Using the trailer hand valve while driving can cause your trailer to skid.
19 . What does an Anti-Lock Braking System (ABS) do?
An Anti-Lock Braking System (ABS) helps prevent wheel lockup during hard braking. If ABS detects impending lockup, it reduces braking pressure to a safe level.
20 . The emergency air line supplies air to the:
The emergency air line (also known as the supply line) has two functions. The first is to supply air to the trailer air tanks, and the second is to control the emergency brakes on combination vehicles.
2025 Ohio | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in Ohio, first, you must hold a valid Ohio CDL. Then, pass the Hazmat knowledge test at your local BMV. You'll also need to undergo a TSA background check. Lastly, submit your application with the appropriate fees to the Ohio Bureau of Motor Vehicles (BMV). The endorsement will be added upon approval.
To obtain a CDL Hazmat license, you must have a valid Commercial Driver's License (CDL). You also need to pass the Hazardous Materials Endorsement Knowledge Test. A Transportation Security Administration (TSA) background check is required. Lastly, you must be at least 21 years old and be able to read and speak English adequately.
When applying for a CDL Hazmat endorsement in Ohio, you'll need your current Ohio CDL. You should also have proof of U.S. citizenship or legal status, such as a birth certificate, passport, or immigration documents. Additionally, you'll need to provide your Social Security number and complete a TSA security threat assessment application, which includes fingerprinting and a background check.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. The Hazardous Materials Endorsement Knowledge Test is designed to evaluate your understanding of the rules and regulations of transporting hazardous materials. It covers topics such as loading and unloading, bulk packaging marking, driving and parking rules, and emergency response procedures.
The written test for the CDL Hazmat endorsement covers a variety of subjects related to hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers, placarding rules, loading and unloading procedures, driving and parking rules, emergency response procedures, and how to handle hazardous materials safely and effectively.
Yes, there are additional charges associated with acquiring a CDL Hazmat endorsement in Ohio. These include fees for the knowledge test, endorsement application, fingerprinting, and background check. The exact amount may vary, so it's advised to check with the Ohio Bureau of Motor Vehicles or a local DMV office for current rates.
Yes, obtaining a CDL Hazmat endorsement requires a background check and security clearance. This is mandated by the Transportation Security Administration (TSA). The process includes fingerprinting and a check of criminal, immigration, and mental health records. The goal is to ensure that hazardous materials are transported safely and securely.
Yes, specialized training and certification are mandatory for a CDL Hazmat endorsement in Ohio. Applicants must pass a written knowledge test that covers hazardous materials regulations and safety procedures. Once you pass the test, the endorsement is added to your Commercial Driver's License. This ensures you are equipped with the necessary knowledge to handle hazardous materials.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in Ohio. The endorsement is required to ensure the driver understands the safety procedures and regulations related to transporting hazardous materials. Violating this can result in hefty fines, suspension of your CDL, or even imprisonment.
You can add a CDL Hazmat endorsement to your current CDL license without needing a new application. However, you must pass the Hazmat knowledge test and undergo a TSA background check. Once cleared, the Hazmat endorsement will be added to your existing CDL. Remember, your CDL must be valid and in good standing for this process.