Combination #2
Combination Vehicles Practice Test | California 2025 #2 Page 3 of 3
Train for FREE online with our California 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 CA 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.
20
17
20
15 . The service air line is often controlled by the foot brake and is attached to the ____ valves.
The service air line carries air and is controlled by either the foot brake or trailer hand brake. The service air line is attached to relay valves, which allow the trailer brakes to be applied quickly.
16 . To find out if a vehicle that was built before 1998 has an Anti-Lock Braking System (ABS), you can:
If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can check under the trailer for wheel speed sensors coming from the back of the brakes.
17 . 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.
18 . When backing up your tractor while coupling it to a trailer, the trailer brakes should be:
Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. Before backing your tractor under the trailer while coupling, make sure your trailer brakes are locked.
19 . If the emergency air line loses pressure:
The emergency air line controls the emergency brakes on a combination vehicle. A loss of air pressure in the emergency line will cause the emergency trailer brakes to activate.
20 . Avoid needing to make sudden lane changes by:
Making a sudden lane change can be dangerous when driving a combination vehicle. Avoid the need to make a sudden lane change by looking down the road for upcoming obstacles that will require you to change lanes.
Search the best driving school in your neighbourhood
2025 California | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in California, you must first have a Commercial Driver's License (CDL). Then, pass the Hazardous Materials (Hazmat) Knowledge Test at a DMV office. After passing, complete a Transportation Security Administration (TSA) background check. Once cleared, take the Hazmat endorsement form to DMV to add the endorsement to your CDL.
To obtain a CDL Hazmat license in California, you need to have a valid Commercial Driver's License (CDL). You must also pass the Hazardous Materials (Hazmat) endorsement knowledge test, provide a valid Transportation Security Administration (TSA) security threat assessment (background check), and complete fingerprinting. Training on handling hazardous materials is also required.
When applying for a CDL Hazmat endorsement in California, you need to provide your current valid Commercial Driver's License (CDL), proof of U.S. citizenship or lawful permanent residency (birth certificate, passport, or green card), and a completed Medical Examination Report Form. You'll also need to pass a TSA background check and provide fingerprints.
Yes, there is a dedicated written test for the CDL Hazmat endorsement in California. This test is designed to evaluate your knowledge about the rules and regulations related to the transportation of hazardous materials. It covers topics such as loading and unloading, bulk packaging, and emergency response procedures. You must pass this test to obtain the endorsement.
The written test for the CDL Hazmat endorsement covers a variety of subjects related to hazardous materials, including: recognition and identification of hazardous materials, compliance with safety regulations, understanding shipping papers, placarding requirements, loading and unloading procedures, handling emergencies and incidents, and the rules for transporting specific types of hazardous materials.
Yes, there are extra charges associated with acquiring a CDL Hazmat endorsement. In California, you must pay a $30 testing fee. Additionally, fingerprinting for the TSA background check costs approximately $86.50. Please note that these fees are subject to change and it's advisable to check the current rates with your local DMV office.
Yes, obtaining a CDL Hazmat endorsement does require a background check and security clearance. This is mandated by the Transportation Security Administration (TSA) and involves fingerprinting and checking for any disqualifying criminal offenses. The goal is to ensure the safety and security of hazardous materials transportation. It's necessary to pass this check to receive the endorsement.
Yes, specialized training and certification are required for the CDL Hazmat endorsement. Applicants must pass a written test regarding the transportation of hazardous materials. Additionally, they must undergo a TSA background check. These requirements ensure that drivers have the necessary knowledge and skills to safely transport hazardous materials.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in California. This endorsement is required to ensure the driver's understanding of safety precautions and procedures for transporting hazardous materials. Driving without it can lead to serious legal consequences including fines and suspension of your commercial driver's license.
Yes, you can add the CDL Hazmat endorsement to your current CDL license. You don't need to apply for a new license. However, you must pass a written Hazmat knowledge test and undergo a TSA background check. Once these steps are completed, the Hazmat endorsement can be added to your existing CDL.
