Xiaoyue (Cathy) Liu Wenjuan Zhao Barrett Taylor Department of Civil & Environmental Engineering University of Washington

Perform a collision and safety analysis for the 35 th Avenue SW corridor  12 intersections  14 roadway sections Background 35th Ave SW Study Corridor

 City of Seattle  Collision Summary for 10 years  WAGDA  Neighborhood districts  Major Arterials  Street Network  Traffic Signals  Principal Transit Routes VOLUME AND ACCIDENT TYPES

Intersection Segment

IntersectionSegment

Road Section between SW Avalon Way & SW Snoqualmie St.  Collision  Highest Rear End Accidents : 16  Highest Parked Car Collision: 11  Solution  Reduce Rear End collisions: ▪ Speed detection signs ($15,000)  Road Diet -> Sharrow

Road Diet Preferred Option Current Image Source: Oran Viriyincy, University of Washington

 Intersect  Dissolve  Clip  Select by Location  Create Layer from Selected Feature  Create Attributes  Hyperlink  Symbology