2018-18 Authorizing the Installation of Stop Signs at the Intersection of East Clay Street and South 22nd Place Facing South 22nd Place

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Excerpt from 4-26-2018 Traffic& Parking Commission Minutes Item #2 Request for stop signs at the intersections of East Clay Street and South 22"d Place facing South 22°d Place,East Clay Street and South 23rd Street facing South 23rd Street,East Clay Street and South 23rd Place facing South 23rd Place,and East Clay Street and South Nelson boulevard facing East Clay Street. City staff received a request from a resident for stop signs at the intersection of East Decatur Street and South 23`d Street. Upon reviewing the accidents records at this intersection, no accidents have occurred there within the last 5 years. Within the neighborhood bounded by Wood Street to the north, 22nd Street to the west,Nelson Boulevard to the east and Powers Boulevard to the south; only two intersections have any stop or yield signs.Nearly all of the intersections have very low volumes and very few recorded accidents in the last 5 years. In cases where residents are used to uncontrolled intersections, it is usually best to leave them uncontrolled until there is either a major change in traffic or there is an increase in accidents.No stop signs are recommended for the intersection of East Decatur Street and South 23`d Street. While most intersections in this neighborhood have very few accidents, a review of accidents showed a higher rate of accidents along each of the intersections along East Clay Street. The intersection of East Clay and South 22❑d Place has had 3 accidents within the last 5 years. The intersection of East Clay and South 23`d Street has had 3 accidents within the last 5 years. The intersection of East Clay and South 23`d Place has had 2 accidents within the last 5 years. Based on the traffic volumes shown on the attached documents,the Clay Street intersections have accident rates ranging from 2.7 to 4.4 accidents per million vehicles entering the intersection.For reference the Traffic and Parking Commission usually uses 1.5 accidents per million vehicles as a threshold for requiring stop signs at an uncontrolled intersection. All three exceed that threshold. The intersection of East Clay Street and South Nelson Boulevard does not have any traffic or accident data attached but a stop sign exists for the road leaving Overlook Adventure Park. Since that road lines up with Clay Street, it would be proper to treat it as a two way stop controlled intersection. East Clay Street has higher traffic volumes than 22nd Place, 23`d Street, and 23`d Place. City staff recommends installing stop signs at the intersections of East Clay Street and South 22nd Place facing South 22nd Place, East Clay Street and South 23rd Street facing South 23rd Street, East Clay Street and South 23rd Place facing South 23rd Place, and East Clay Street and South Nelson Boulevard facing East Clay Street. City staff recommends installing stop signs at the intersections of East Clay Street and South 22nd Place facing South 22,d Place,East Clay Street and South 23`d Street facing South 23`d Street,East Clay Street and South 23`d Place facing South 23`d Place, and East Clay Street and South Nelson Boulevard facing East Clay Street.