Licensing, insurance and the law
A law enforcement officer stops you for a traffic violation. When must the officer tell you the reason for the stop?
- Before any questions about a crime or traffic violation, except to protect against an imminent threat. Correct answer
- Only if you ask for it, and only after the officer has looked at your documents.
- Only when the citation is written, because that is where the reason is recorded.
Why
In California, an officer who stops you, whether you are driving or on foot, has to tell you why before starting any questions about a criminal investigation or a traffic violation. The one exception is an officer who reasonably believes that keeping the reason back is necessary to protect life or property from an imminent threat. You do not have to ask for it. The reason must also be documented on the citation or on the law enforcement report, but that is a second requirement, not a replacement for telling you first.
Where this comes from
California Driver's Handbook, June 2025 edition. The correct answer is Before any questions about a crime or traffic violation, except to protect against an imminent threat.
The rule behind this one
License, points and insurance in California goes through the whole topic, with the page of the California Driver's Handbook behind every rule.
More on licensing, insurance and the law
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- At your DMV administrative hearing, you want to question the person who prepared a document DMV is using as evidence. What does the handbook say?