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P Guidepost <br /> Roadway Conditions <br /> Overall,crashes due to roadway defects were a <br /> small portion of the crashes studied. Some <br /> areas identified still had a consistent pattern of <br /> crashes due to the roadway conditions. The <br /> public identified worn surfaces and potholes at <br /> multiple locations and the project team - `' <br /> confirmed this with crash statistics. Worn <br /> surfaces can be especially dangerous on curves <br /> and wet roadways. A study performed by the <br /> Florida Department of Transportation" showed <br /> that high friction surfaces reduced the crash -;: <br /> rate on tight curves by 32%and the wet-weather �` r <br /> crash rate by 75% on average. These areas can <br /> be improved via regular maintenance and a .� 6 �; � .R' <br /> program dedicated to filling the potholes in, V • <br /> especially in late winter and early spring when <br /> the freeze thaw cycles increase the number of <br /> potholes. High Friction Surface Treatment in Florida <br /> Creating a website like the Social Pinpoint map <br /> would enable the public to continuously report roadway defects, facilitating timely planning and maintenance. Small <br /> roadway issues can be difficult for the City to identify on its own, but public input can help quickly pinpoint these <br /> problems. Prompt maintenance based on community reports can prevent future crashes caused by roadway defects. <br /> Safety Guidelines <br /> The United States Department of Transportation provides traffic calming and safety guidelines and case studies that <br /> the project team used to develop the following guidelines. Several cities' guidelines were studied and compared to <br /> develop the criteria below. Some of these cities include Wauwatosa, Wisconsin12, Sunnyvale, California'', New York <br /> City, New York14, Seattle, Washington15, and Portland, Maine16. The thresholds were adjusted to account for <br /> differences in population and overall crashes. <br /> 11 High Friction Surface Treatment Guidelines Project Selection,Materials,and Construction. Florida Department of Transportation. <br /> (n.d.). https://www.fdot.gov/docs/default-source/materials/pavement/performance/ndt/documents/hfstguidelines.pdf <br /> 12 City of Wauwatosa, Neighborhood Traffic Calming Program. Wauwatosa Department of Public Works. (2025). <br /> https://www.wauwatosa.net/home/showpublisheddocument/6208/638870648133370000 <br /> 13 City of Sunnyvale,Department of Public Works,Division of Transportation and Traffic,&Fehr and Peers Transportation <br /> Consultants. (2012). Neighborhood traffic calming. In City of <br /> Sunnyvale[Report]. https://popcenter.asu.edu/sites/g/files/litvpz3631/files/learning/speeding/NeighborhoodTrafficCalming.pd <br /> 14 NYC DOT-Motorists&Parking-Neighborhood slow zones. (2015). https://www.nyc.gov/html/dot/ <br /> html/motorist/slowzones.shtml <br /> is Brian Dougherty. (2015).SEATTLE SAFE ROUTES TO SCHOOL ENGINEERING TOOLKIT. https://www.seattle.gov/ <br /> documents/Departments/SDOT/NTO/seattlesaferoutestoschoolengineeringtoolkit.pdf <br /> 16 Portland Bureau of Fire, Rescue and Emergency Service and Bureau of Traffic Management Portland Department of <br /> Transportation. (January 1996). "The Influence of Traffic Calming Devices on Fire Vehicle Travel Times." Portland, Oregon. <br /> https://nacto.org/wp-content/uploads/City-of-Portland-1996.pdf <br /> lcapur Page 42 of 81 <br /> ,.,., all in <br />