When inspecting your tank vehicle before operation, make sure all specialty equipment is in safe working condition. This includes vapor recovery kits, grounding and bonding cables, and emergency shut-off systems.

Check grounding and bonding cables.

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.

Check for wheel speed sensors coming from the back of the brakes.

Look for a red light on the front right corner of the converter dolly.

Pump the air brakes to activate the ABS.

Tank Endorsement Test | California 2026 #2 Page 2 of 3

Train for FREE with our California tank endorsement practice test online. 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 tank 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 CDL tank vehicle endorsement may vary from state to state.

Number of Question 15

Passing Score 12

Number of Tests 20

Tank Endorsement Test | California 2026 #2 Page 2 of 3

6 . The amount of liquid cargo than can be loaded into a tank depends on:

7 . Before operating a tank vehicle, it is important to:

8 . If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can:

9 . In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:

10 . When driving on a wet road, you should reduce your speed by:

See the exact questions that will be on the 2026 DMV exam.

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