A 911 caller says a truck ran them off the road, gives the plate, and hangs up — no name. Enough to stop the truck? Navarette v. California says it can be.
What did Navarette v. California decide?
An anonymous 911 tip reporting dangerous driving can supply reasonable suspicion for a stop when, under the totality, it bears adequate indicia of reliability — an eyewitness basis of knowledge, a contemporaneous report, and use of the 911 system, which carries safeguards against false reports.
Navarette v. California, 572 U.S. 393 (2014) — read the opinion on CourtListener.
What does Navarette allow?
- A stop based on an anonymous 911 tip that carries reliability markers — a firsthand account, made right after the event, through 911
- Treating a reckless-driving report as suggesting ongoing danger, such as DUI
What does it NOT allow?
- A bare, uncorroborated anonymous tip with no basis of knowledge or reliability (see Florida v. J.L.)
- Stretching a stale or secondhand rumor into reasonable suspicion
How it plays out on the street
Not every anonymous tip is created equal. A contemporaneous 911 eyewitness report of dangerous driving can carry the day; a vague, uncorroborated ‘someone said’ does not. Document the reliability markers — what was reported, how soon, and that it came through 911. Federal floor; your state may set a higher bar.
Frequently asked questions
Can an anonymous 911 call justify a stop?
It can, under Navarette, when the tip shows reliability — a firsthand account, reported contemporaneously, through the 911 system.
Is every anonymous tip enough?
No. A bare, uncorroborated anonymous tip without a basis of knowledge doesn’t create reasonable suspicion (see Florida v. J.L.).
Related cases
- Kansas v. Glover (2020): Can Police Stop a Car Because the Owner’s License Is Revoked?
- Terry v. Ohio: Reasonable Suspicion on Every Traffic Stop
- Whren v. United States (1996): Can Police Stop You for One Reason to Investigate Another?
Carry the rule, not the guesswork. Every case in StreetSense is broken down like this — bottom line, limits, and the exact citation — verified against the real opinion and available fully offline on shift. Start the free trial.
StreetSense is an educational reference for law enforcement, not legal advice. Federal cases set the floor — your state constitution, statutes, and department policy can impose stricter limits. Always follow your state’s rule and your agency’s policy.