The placement of stop signs at intersections must be justified by an engineering study. There are three items that are reviewed in the study: the number of vehicles (traffic volume) traveling through the intersection, the number of reported traffic accidents at the intersection for the previous 12-month period, and sight distance measurements for approaching vehicles. These “warrants” are based on state law and transportation officials’ guidelines. A stop sign is only placed to assist a motorist in determining which vehicle has the right of way to travel through an intersection to avoid an accident with another vehicle. Contact us at 630-260-2065 for more information.