Combination #1
Combination Vehicles Practice Test | California 2025 #1 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.
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15 . 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.
16 . After connecting the air lines to the trailer while coupling, you should:
Correctly following the steps to couple and uncouple trailers is vital to safely operating a combination vehicle. After connecting the air lines to the trailer while coupling, you should supply air to the trailer.
17 . When glad hands are coupled, the seals should be pressed together at a ____ angle.
When coupling, be sure to couple the proper glad hands. When glad hands are connected, the seals should be pressed together at a 90-degree angle.
18 . 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.
19 . Keeping cargo low can:
Rollovers can happen when a combination vehicle is turned too quickly. To help prevent the risk of rollover, it is important to keep the vehicle's center of gravity low by loading cargo as close to the ground as possible.
20 . In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:
In vehicles equipped with an automatic tractor protection valve, the valve will pop out if air pressure drops to a level between 20 and 45 psi. When the valve pops out, the protection valve will close, stopping the flow of air.
2025 California | Frequently Asked Questions
To secure a Commercial Driver’s License (CDL) bus endorsement in California, you must first hold a valid CDL. Then, pass the passenger transport test. You'll also need to pass a Department of Transportation (DOT) physical exam, provide proof of a clean driving record, and successfully complete a bus driver training course. Lastly, pass the skills test in the type of bus you wish to drive.
To obtain a CDL Bus License in California, you need to have a regular driver's license, be at least 18 years old, and have a clean driving record. You must then pass the CDL General Knowledge test, the Passenger Transport test, and the School Bus Endorsement test. Additionally, you need to pass a Department of Transportation (DOT) physical exam and complete a driver training course.
Yes, specific training is necessary for a CDL Bus endorsement in California. You need to complete a professional bus driving course. This course will cover topics like vehicle inspection, on-road driving, and passenger safety. Also, you need to pass the Passenger Transport test and the School Bus Endowment test. On-the-job training may also be required by some employers.
CDL Bus licenses fall under three main classifications in California: Class A, B, and C. Class A is for combination vehicles like tractor-trailers. Class B is for single or combination vehicles like buses, dump trucks, or tow trucks. Class C is for vehicles designed to transport 16 or more passengers including the driver, or hazardous materials. The specific class depends on the vehicle's weight and design.
No, you cannot use your personal vehicle for the CDL Bus driving test. The vehicle you use must match the class of CDL license you are applying for. For example, if you're applying for a bus endorsement, you must test in a bus. The vehicle should be fully operational and meet all California Department of Motor Vehicles requirements.
During the CDL Bus driving test, your ability to safely operate the vehicle and your knowledge about its specific features will be evaluated. Key skills tested include vehicle inspection, backing up, parallel parking, city and highway driving, stopping at railroad crossings, loading and unloading passengers, emergency exit procedures, and responding to brake system failures.
Yes, additional medical prerequisites are essential for a CDL Bus endorsement in California. Applicants must pass a Department of Transportation (DOT) physical examination every two years. This exam evaluates vision, hearing, blood pressure, and checks for conditions like diabetes and epilepsy. It ensures that the applicant is physically capable to safely operate a commercial vehicle.
No, it is not permissible to transport passengers without a valid CDL Bus endorsement. In California, driving a bus or any passenger vehicle without the proper endorsement is illegal and can result in significant fines, suspension of your license, and potentially jail time. It's crucial to obtain the appropriate licensing to ensure safety and compliance with the law.
Yes, a CDL Bus endorsement can be added to your existing CDL license in California. You don't need a new application for the license itself, but you will need to complete the necessary written and skills tests related to passenger transportation, and meet any additional requirements such as a physical exam.
Yes, there are restrictions. Drivers with a CDL Bus endorsement in California must comply with hours-of-service regulations, which limit the number of hours they can drive without rest. They also need to pass regular physical exams and maintain a clean driving record. Additionally, certain medical conditions or medications may disqualify a driver from holding this endorsement.