Indiana Sobriety Checkpoints: No Authorizing Statute, and a One Year Refusal Suspension

The statutory silence is real and can be shown from the structure of the code rather than guessed at. A full text scan of the 2026 Indiana Code returns no occurrence of "roadblock" or "sobriety checkpoint" in any of the 37 titles. The only checkpoint provision the General Assembly ever wrote, Ind. Code § 9-19-10-3.1, added by P.L.214-2007, permits a stop to check seat belt compliance, bars any inspection, search or detention based solely on that violation, and then forbids agencies from using a safety belt checkpoint at all. Indiana therefore has no statutory scheme setting a checkpoint's location approval, signage, supervisory sign off, publicity or duration, of the kind several other states enacted.

That does not make checkpoints illegal, and they are common. The Indiana Criminal Justice Institute funds 350 municipal and county law enforcement agencies for overtime impaired driving patrols, runs the statewide Operation Pullover program that participating agencies must join, requires each participating officer to be certified in Standardized Field Sobriety Testing, and reports that DUI enforcement is conducted in all 92 Indiana counties, using methods it describes as including sobriety checkpoints.

The governing law is constitutional. Article 1, Section 11 of the Indiana Constitution secures the right of the people to be secure in their persons, houses, papers and effects against unreasonable search or seizure, and Indiana courts apply their own reasonableness analysis under it rather than importing the federal test wholesale, so a checkpoint can be attacked on state grounds even if it survives federal ones. The leading federal decision on the subject came out of Indianapolis. In City of Indianapolis v. Edmond, 531 U.S. 32 (2000), the Supreme Court held that because the primary purpose of the city's vehicle checkpoint program was drug interdiction, indistinguishable from a general interest in crime control, the checkpoints violated the Fourth Amendment. The Court distinguished suspicionless stops at a sobriety checkpoint and at a fixed immigration checkpoint, and its earlier suggestion that a licence and registration roadblock would be permissible for highway safety. The practical lesson for an Indiana driver is that purpose is what the case turns on, and a checkpoint whose real object is finding drugs is on very different footing from one aimed at impaired driving.

Once you are stopped, the code takes over. Ind. Code § 9-30-6-1 makes operating a vehicle in Indiana implied consent to the chemical test provisions of that chapter. But the officer cannot simply demand a test: Ind. Code § 9-30-6-2(a) provides that an officer "who has probable cause to believe" you committed an offence under IC 9-30-5, IC 9-30-9 or that chapter, or a violation under IC 9-30-15, shall offer the opportunity to submit. Under § 9-30-6-2(b) more than one test may be offered and no test need be offered to an unconscious person; under § 9-30-6-2(c) the test must be administered within three hours after the officer had probable cause; and under § 9-30-6-2(d) you must submit to each test offered in order to comply with implied consent. Ind. Code § 9-30-6-3 allows arrest on probable cause and makes a refusal admissible in evidence at any later proceeding.

Refusal triggers an administrative track that runs alongside any criminal charge. Ind. Code § 9-30-6-7(a) obliges the arresting officer to warn you that refusal will result in suspension, and § 9-30-6-7(b) then requires the officer to take your licence, issue a receipt valid until the initial hearing, and send a sworn probable cause affidavit to the county prosecuting attorney. Ind. Code § 9-30-6-9(b) directs the Bureau of Motor Vehicles to suspend for one year, or two years if you have at least one previous conviction for operating while intoxicated. A test you take and fail produces a shorter 180 day suspension under § 9-30-6-9(c), or until the court disposes of the charges, whichever comes first. Notice is mailed or sent electronically and the suspension begins seven days after the date of the notice or on the date the court orders it, whichever occurs first. As an alternative for certain charges under IC 9-30-5-1(a) or (b), a court may order an ignition interlock device under § 9-30-6-8(d) instead of a suspension, and driving without a required functioning interlock is a Class B infraction, or a Class B misdemeanor if you know of the requirement.

You can fight the suspension separately from the criminal case. Ind. Code § 9-30-6-10 entitles you to a prompt judicial hearing on a written, verified petition alleging specific facts that contradict the probable cause affidavit, filed in the court where the charges are pending or, if none have been filed, in any court of the county with jurisdiction over IC 9-30-5 offences. The hearing is limited by § 9-30-6-10(c) to two questions: whether the arresting officer had probable cause to believe you were operating in violation of IC 9-30-5, and whether you refused a test. You carry the burden by a preponderance of the evidence, the county prosecuting attorney represents the Bureau, and the order is a final judgment either side may appeal as a civil action.

Refusing a chemical test is not itself a crime in Indiana, but it costs a one year licence suspension under Ind. Code § 9-30-6-9(b), two years with a prior operating while intoxicated conviction, and the refusal is admissible against you under § 9-30-6-3(b). Submitting and registering prima facie evidence of intoxication produces a 180 day suspension under § 9-30-6-9(c). The underlying criminal charge is brought under IC 9-30-5, and the Bureau of Motor Vehicles administers the suspension after a judicial officer finds probable cause under § 9-30-6-8(a).

Enforcement in the field is by any Indiana law enforcement agency; the Indiana Criminal Justice Institute funds the overtime patrols and requires Standardized Field Sobriety Testing certification. Your remedies are a suppression motion in the criminal case, argued under both the Fourth Amendment and Article 1, Section 11 of the Indiana Constitution, and the separate statutory petition for judicial review under Ind. Code § 9-30-6-10, whose only two issues are probable cause and refusal. A checkpoint stopping cars to look for drugs rather than impaired drivers is squarely within the holding of City of Indianapolis v. Edmond. A seat belt checkpoint is flatly barred by Ind. 1(a).