Combination #1
Combination Vehicles Practice Test | California 2026 #1 Page 2 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 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 for issuing a combination license may vary from state to state.
20
17
20
8 . The service air line is attached to the:
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.
9 . 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.
10 . While inspecting coupling, you should go under the trailer and:
While inspecting coupling, you should go under the trailer and look into the back of the fifth wheel. Ensure that the fifth wheel jaws are secured around the shank of the kingpin.
11 . Before a drive, ensure that air flows to all trailers by:
Rolling each trailer down a hill and testing the brakes.
Before a trip, ensure that air in the air brake system reaches all trailers. Do this by waiting for air pressure to build, then sending air to both the emergency and service lines and opening the shut-off valves on the rear of the last trailer. If air escapes from the shut-off valves in the rear of the combination, the air is being supplied to the entire vehicle.
12 . 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.
13 . In a double or triple combination:
When positioning trailers in a combination, the most heavily-loaded trailer should be the closest to the tractor. The lightest trailer should be positioned in the rear.
14 . Combination vehicles need extra space on the road because they:
Combination vehicles need more space on the road than other commercial vehicles because they are longer and need more space to turn and stop. It is especially important to properly manage space when you are operating a combination vehicle.
Search the best driving school in your neighbourhood
2026 California | Frequently Asked Questions
To acquire a CDL Passenger endorsement in California, you must first have a commercial driver's license (CDL). Then, you need to pass a written passenger transport test and a skills test in the type of vehicle you'll be driving. You must also complete a medical examination and submit the Medical Examination Report form to the DMV.
To obtain a CDL Passenger license in California, you must hold a valid commercial driving license (CDL). You must then pass a written passenger transport test and a skills test in the type of vehicle you'll be driving. Additionally, you need to undergo a medical examination and submit the Medical Examination Report form to the DMV.
Yes, to secure a CDL Passenger endorsement in California, you need specific training to pass the written and skills tests required by the DMV. While not mandatory, professional training programs help you gain practical experience. These programs cover topics like vehicle inspection, on-road driving, and passenger safety, which are critical for the endorsement.
Yes, for a CDL Passenger endorsement in California, you are required to pass a written passenger transport test. This test focuses on specific knowledge related to carrying passengers, such as bus safety rules and procedures. This is in addition to the general knowledge test that is required for the base CDL.
During the CDL Passenger endorsement assessment, you will be expected to demonstrate your ability to safely load and unload passengers, respond to emergency situations, operate a vehicle of the same class as the one you plan to drive, and conduct vehicle inspections. Additionally, you'll need to show your ability to manage distractions and maintain a safe environment for passengers.
No, it is illegal to transport passengers in California without a valid CDL Passenger endorsement. This endorsement is required for drivers operating vehicles designed to carry 16 or more passengers, including the driver. Violating this law can lead to serious consequences, including fines, disqualification or suspension of your CDL, and even jail time in severe cases.
Yes, you can add the CDL Passenger endorsement to your existing Commercial Driver's License (CDL). You don't need a new application for your license, but you will need to pass the Passenger Vehicle written test and a skills test in a passenger vehicle. Ensure you have the correct class of CDL for the vehicle you plan to drive.
Yes, there are specific limitations for drivers with a CDL Passenger endorsement in California. For instance, you must not have more than two moving violations or at-fault accidents in the past two years. You also cannot have a DUI conviction within the past ten years. Furthermore, you must pass a physical examination every two years to ensure you're fit to drive.
Yes, in California, to acquire a CDL Passenger endorsement, you must be at least 21 years old. This is due to the fact that interstate driving or transporting hazardous materials is involved. However, at 18 years old, you can apply for a CDL for intrastate driving (within California only), but it won't include passenger endorsement.
With a CDL Passenger endorsement, you are eligible to operate vehicles such as buses, shuttles, and vans that are designed to carry 16 or more passengers, including the driver. This endorsement is particularly useful for those seeking employment as a bus driver in schools, public transit, and private charter companies.
