Was that car going 47 mph or 45 mph in the 45 zone? Can you tell? Can a trained police officer tell? A recent Ohio Supreme Court case suggests they can.
In Barberton v. Jenney, the Ohio Supreme Court held that a police officer’s unaided visual estimation of a vehicle’s speed is sufficient evidence to support a conviction for speeding without independent verification of the vehicle’s speed if the officer is trained, is certified, and is experienced in visually estimating vehicle speed.