California Driver License (DMV) Written Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Ace your California DMV written test! Prepare for the exam by practicing hundreds of multiple-choice questions covering traffic laws and road signs. Boost your knowledge, gain confidence, and increase your chances of passing the test on your first try.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


When carrying hazardous materials, you must:

  1. Follow the speed limit

  2. Have a brake light and headlights on

  3. Have a flashing green light

  4. Have a red flag on the back of the vehicle

The correct answer is: Have a red flag on the back of the vehicle

When carrying hazardous materials, you must have a red flag on the back of the vehicle, as this is a required marking for any vehicle transporting hazardous materials. Options A and B are basic safety measures and should always be followed while driving, but they are not specific to transporting hazardous materials. Option C may be used by emergency response vehicles, but it is not required for vehicles carrying hazardous materials. Therefore, the best answer is D.