Seat belt violation, fine only, no jail exposure. Can you take her to jail anyway? Atwater says the Constitution allows it — which is not the same as saying you should.
What did Atwater v. City of Lago Vista decide?
If an officer has probable cause to believe an individual has committed even a very minor criminal offense in his presence, the Fourth Amendment does not forbid arresting that person. The Court declined to create a constitutional rule barring custodial arrest for fine-only offenses.
Atwater v. City of Lago Vista, 532 U.S. 318 (2001) — read the opinion on CourtListener.

What does Atwater allow?
- A custodial arrest supported by probable cause for a minor offense, as a matter of federal constitutional law
- A search incident to that lawful custodial arrest under U.S. v. Robinson
- Declining to arrest and issuing a summons instead — always available, and usually the better call
What does it NOT allow?
- An arrest without probable cause, minor offense or not
- Ignoring state statutes and department policy that limit or prohibit custodial arrest for fine-only or motor-vehicle offenses — many do
- An arrest carried out in an extraordinary manner unusually harmful to the person’s privacy or physical interests
How it plays out on the street
This is the case most likely to get an officer in trouble for being right. Atwater is the constitutional ceiling on suppression, not permission from your state or your chief. New Jersey and many other states channel minor motor-vehicle and fine-only offenses to a summons by statute, policy, or court rule, and violating that gets you a civil claim and discipline even where the evidence survives. Before a custodial arrest on a minor offense, know your state’s rule, and have a reason beyond the fact that you could.
Frequently asked questions
Can police arrest you for a minor traffic offense?
Under the Fourth Amendment, yes, with probable cause. But state statutes and department policy frequently require a summons instead for fine-only offenses.
Does Atwater allow a search after that arrest?
A lawful custodial arrest permits a search incident to arrest under U.S. v. Robinson — but only if the arrest itself was lawful under your state's rules.
Related cases
- U.S. v. Robinson (1973): How Far Can a Search Go After an Arrest?
- Whren v. United States (1996): Can Police Stop You for One Reason to Investigate Another?
- Arizona v. Gant (2009): Can Police Search Your Car After You’re Arrested?
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.
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