Traffic Stops and Probable Cause

On November 20 I had the honor to participate in the 2009 OVI Update seminar presented by the Ohio State Bar Association. One of the participants in the seminar was the Honorable Jennifer Weiler, Judge of The Garfield Heights, Ohio Municipal Court and co-author of “Ohio Driving Under the Influence Law,” a publication of Thompson-West Publishing. Judge Weiler’s topic was “Motions to Suppress in Operating a Vehicle Under the Influence Cases.” This blog is a discussion of the judge’s excellent presentation regarding traffic stops and their constitutionality.

There are two types of traffic stops and different constitutional standards apply to each. These traffic stops are characterized as the “non-investigatory” traffic stop and the other the “investigatory” traffic stop.

Non-Investigatory Traffic Stop

The most common stop is the non-investigatory traffic stop. It occurs when an officer observes a violation of the traffic code. Upon observing the violation, the officer stops the driver to issue a citation.

This type of stop requires probable cause, that is, a reasonable ground for belief of guilt, which is provided when the officer witnesses the traffic violation, State v. Downs, 2004 Ohio 3003, State v. Moeller, 2000 WL 1577287. De minimus violations can form a sufficient basis for this type of stop owing to the fact that the officer personally observed the violation.

This does not mean that the stop can be pretextual - an alleged violation for the purpose of stopping the driver when no actual violation occurred, ie. Low tire pressure, spider crack in the windshield, gas tank cap open. But, as long as a legitimate basis for the stop exists, the subjective intent or motivation of the officer does not invalidate the stop, Whren v. United States, 517 U.S. 806. The stop can be pre-textual as long as there is some violation that the officer observes or believes he observes.

Investigatory Traffic Stop

The second type of traffic stop is an investigatory traffic stop. It has been referred to as “the motorized equivalent of a Terry Stop,” State v. Downs, 2004 Ohio 3003. This stop permits the officer to stop the vehicle is the officer has reasonable suspicion based on specific, articuable facts than an offense has been or is being committed, State v. Slider, 2008 Ohio 2318., State v. Downs, Supra.

In this type of stop the officer does not necessarily see a specific violation but does have sufficient reason to believe a criminal act has occurred or is occurring and the officer seeks to confirm or refute his or her suspicion, State v. Moeller, Supra. Reasonable suspicion is a lesser standard than that of reasonable cause required to make an arrest.

This type of stop is predicated upon informant’s tips, 911 calls, or random plate checks. The reader is directed to prior blogs regarding the discussion of informant’s tips as a basis for a traffic stop.

In summary, where the officer personally observes a traffic violation (a non-investigatory stop), he may stop the vehicle. Where the officer does not personally observe the traffic violation (an investigatory stop), the officer must point to specific articuable facts that an offense has occurred or is occurring.