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Criminal Defense

Miranda Rights in California: When Must Police Read Them?

By Steven A. Alexander, Esq.California Bar #182068Last reviewed: June 2026

Quick Answer

Police must read Miranda rights only before a custodial interrogation — when you are both in custody and being questioned. They do not have to read Miranda at every arrest. If police question you in custody without the warning, your statements can be suppressed, but the case is not automatically dismissed.

Key Takeaways

  • Miranda is required only when you are (1) in custody AND (2) being interrogated.
  • A missing Miranda warning suppresses your statements — it does not dismiss the case.
  • You must clearly invoke: "I want a lawyer" and "I am invoking my right to remain silent."
  • Volunteered statements (not in response to questioning) are not protected by Miranda.

Frequently Asked Questions

When do police have to read you your Miranda rights in California?

Only before a custodial interrogation — meaning you are in custody (not free to leave) and police are questioning you about a crime. If either element is missing, Miranda does not apply. Police do not have to read Miranda simply because they are arresting you.

What happens if police do not read me my Miranda rights?

A Miranda violation does not dismiss your case. Instead, statements you made during the unwarned custodial interrogation can be suppressed and kept out of trial. Other evidence remains admissible. An attorney files a motion to exclude the improperly obtained statements.

How do I invoke my Miranda rights?

You must do so clearly and unambiguously. Say: "I am invoking my right to remain silent and I want a lawyer." Once you ask for a lawyer, police must stop questioning you. Staying silent without saying these words is not always enough to invoke the protection.

Does Miranda apply during a traffic stop?

Usually not. Routine traffic-stop questioning is generally not considered custodial, so Miranda typically does not apply. It applies once the encounter becomes a custodial interrogation — for example, after a DUI arrest when officers question you at the station.

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