A tank endorsement is required for vehicles with:

Tanks with 1,000+ gallon capacity for liquid/gas transport

Liquid surge in a tank vehicle:

Can push the truck in the direction of the wave

Smooth bore tanks (no baffles) have:

The most surge - forward and backward

When driving a tank vehicle, you should:

Brake early and gently to allow for surge

California Practice Tests

15 Questions

California CDL Tanker Test

Based on the Official California DMV CDL Manual

80%

Passing Score

After the practice test

Turn a practice score into a pass in California

Practice questions show you where you are. These are the three things people use next, in the order they usually use them.

Tanker endorsement guide

Surge, outage, baffles and the liquid-load questions that fail most first attempts.

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Full-length General Knowledge exam

Timed, scored and explained, on CertQuestUSA, our exam-prep site. Free to take; results show the sections to reread.

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Other California Practice Tests

Air Brakes(50 questions)Combination Vehicles(15 questions)General Knowledge(50 questions)HazMat(50 questions)Passenger(15 questions)School Bus(15 questions)

Tips for the Tanker Section

1.Study the Tanker section of the official California DMV CDL
2.Focus on California-specific rules and regulations
3.Take this practice test multiple times until you score 80%+
4.Review explanations for every question you miss

Disclaimer: This practice test is for educational purposes only and is not affiliated with or endorsed by the California DMV or the FMCSA. Questions are based on the publicly available California CDL Manual and are designed to help you prepare for the official exam. Always study the official California CDL handbook for the most accurate information.