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Table 2. crash data for fatal and serious injury collision by jurisdiction and collision type. <br />Risk-Based Prioritization Methodology <br />Run-off the road crashes have been identified as the predominant collision type in Kittitas County and are occurring <br />at a disproportionately high rate on specific conidors as compared to other public roads in the state as shown in the <br />crash data provided by WSDOT for 2017-2021, reflected in Table 2. As a result, this plan will focus on roadside <br />safety improvements to reduce the severity and number of accidents on Kittitas County roads where it is most likely <br />that run-off the road crashes will occur. <br />From a safety perspective, the ideal roadway is straight with roadsides that are flat and unobstructed by hazards. <br />Straight roadways eliminate the need for drivers to navigate curves, reducing the chances of running off the road. <br />Providing the recommended clear zone and roadside slopes allows drivers to safely recover control of a vehicle in <br />the event they do leave the roadway and helps ensure fixed-object hazards do not cause fatal or serious injury <br />7 <br />2017 through 2021 Crash Data <br />Fatal/Serious lnjury Collision Types and Conditions <br />Type of Collision <br />(Run.off the Road) <br />Kttitas County AllCounties-Co. <br />Maintained Roads <br />AllPublic Roads <br />(Washington State) <br />Number <br />of <br />Crashes <br />Percent <br />of <br />Crashes <br />Number <br />of <br />Crashes <br />Percent <br />of <br />Crashes <br />Number <br />of <br />Crashes <br />Percent of <br />Crashes <br />Hit Fixed Obiect - Roadwav Ditch 4 30.80%208 16.60%442 12.20Y0 <br />Hit Fixed Obiect - Tree/Stump (Stationarv)3 23.100/o 293 23.40Y0 654 18.00% <br />Hit Fixed Obiect - Fence 1 7.7010 80 6.400/o 181 5.00% <br />Hit Fixed Obiect - Earth Bank 1 7.70o/o 139 11.10T0 319 8.80% <br />Hit Fixed Obiect - Over Embankment 1 7.70T0 91 7.30Y0 250 6.90% <br />Hit Fixed Obiect - Boulder (Stationarv)I 7.700/o 31 2.500/o 59 1.60Y0 <br />Hit Fixed Obiect - Utilitv Box I 7.70%8 0.60%24 0.70Yo <br />Hit Fixed Obiect - Rock Bank 1 7.70o/o 7 0.60%Jb 1.00T0 <br />Total Hit Fixed Object 13 44.80o/o 1,254 42.B}Yo 3.636 27.90T0 <br />Total Overturn 6 20.700/o 259 8.80%858 6.60% <br />Light Condition - Dark, No Street Liohts 8 27.60To 823 28.100/"2,078 15.90% <br />Liqht Condition - Dawn I 3.40T0 66 2,30To 240 1.80% <br />Lisht Condition - Dusk 1 3.40Y0 108 3.700/o 424 3.20T0 <br />Light Condition - Dark, Street Lishts On 0 0.00%264 9.00%3,128 24.00Y0 <br />Total LiEht Condition 10 34.40%1.261 43.10V0 5,870 44.90Y0 <br />Non-lntersection - Not Related 21 72.40o/o 1.960 66.90%7,435 57.00T0 <br />Road Curvature - Horizontal Curve 10 34.500/o 1,046 35.700/"3,1 64 24.20Yo <br />Over Centerline 2 4.70o/o 103 2.80o/o 335 2.10Yo <br />Motorcycle 5 13.50%625 14.900/o 2,504 12.00T0 <br />Posted Speed Limit at 50 mph 25 73.500/o 919 25.10Yo 1,884 10.80%