PHOENIX โ€” A police officerโ€™s misunderstanding of traffic laws doesnโ€™t provide the legal basis to pull someone over, even if they were improperly trained, the state Court of Appeals has ruled.

The judges threw out the drunken-driving conviction of Kyle Stoll, saying Cochise County sheriffโ€™s deputies had no legal reason to pull him over in the first place. They said there was nothing wrong with the license plate light on the back of his vehicle.

Judge Michael Miller, writing for the unanimous panel, acknowledged that some white light from the light could be seen from behind the vehicle. And he agreed that the sheriffโ€™s department had trained deputies for years that any white light on the rear of a vehicle that was not backing up was illegal.

But Miller said thatโ€™s not what the law says.

The judge said not all mistakes require a traffic stop and subsequent criminal conviction to be thrown out.

โ€œThe Fourth Amendment (prohibition against warrantless search and seizure) tolerates only reasonable mistakes of law,โ€ Miller wrote. But he said โ€œthose mistakes must be objectively reasonable.โ€

In this case, the judge said, the wording of the law in this case was โ€œunambiguous.โ€

โ€œPut another way, the fact that the department had trained its officers in a way that permitted a misreading of (the law) does not make that misreading objectively reasonable,โ€ he wrote.

The ruling sends the case back to Cochise County Superior Court Judge James Conlogue where it will have to be dismissed unless prosecutors can show another valid reason for the stop. But Miller noted that Conlogue has previously rejected two alternate theories offered.

Court records show deputies were in a convenience store when they smelled the odor of burned marijuana near Stoll and a friend. When the two men drove away, deputies followed.

They pulled over the vehicle after noting that the white lamp used to illuminate the license plate โ€” something required under Arizona law โ€” actually could be seen from the rear of the vehicle. That, they concluded, violated laws that said rear lights can be only red, yellow or amber.

The trial judge initially threw out the charges. But he reconsidered following a 2014 U.S. Supreme Court ruling that said that a reasonable mistake of the law should not void everything that follows.

Stoll eventually was convicted.

The problem with all that, Miller wrote, is there is no way to read Arizona law to suggest that it is reasonable for a deputy to believe that the ability to see a white light from the rear of a vehicle is illegal.

He said the law clearly says that stop lamps and other signals may be red, amber and yellow, and that โ€œthe light illuminating the license plate ... shall be white.โ€

โ€œSimply stated, (the law) requires only that the license plate lamp and backup lamp shall cast white light as opposed to red,โ€ Miller wrote.

โ€œThere is no dispute that the license plate lamp on Stollโ€™s SUV illuminated the license plate with a white light,โ€ the judge continued. โ€œThere was no legally correct basis for the deputy to investigate.โ€

In fact, Miller wrote, the whole interpretation the sheriffโ€™s department has of the law makes no sense.

He said the way the agency is interpreting it, the law is broken if any light does not fall directly on the license plate.

โ€œUnder the stateโ€™s reading, unless a vehicleโ€™s license plate lamp is shielded with such precision as to emit white light only onto the license plate itself and nowhere else โ€” not even elsewhere on the rear of the vehicle, the lamp does not comply with (the law),โ€ Miller wrote. โ€œThe state provides no authority for this reading other than the deputiesโ€™ own interpretation.โ€

There was no immediate response from the sheriffโ€™s department to ask questions about the case or training of its deputies.


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