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The data was further evaluated in order to determine the predominant crash types and contributing <br />factors. As shown in Table 2 below, the predominant causes of fatal and serious injury collisions in <br />Kittitas County are "hitting a fixed object" and "overturning." Out of all of the fatal and serious injury <br />collisions, 53.8% were caused by drivers running into a fixed object such as ditches, embankments, and <br />fences. An additional 26.9% of the fatal and serious injury collisions were caused by vehicles <br />overturning. Fatal and serious injury collisions mainly occurred under at least one of the following types <br />of conditions: dark or dusk lighting, at non -intersection locations, on roadway curves (horizontal curve), <br />exceeding safe speed, crossing over the centerline, vehicle type of motorcycle, and on roads with 50 <br />mph speed limits. See Table 2 for more details. <br />TABLE 2 <br />2011 through 2015 Crash Data <br />Fatal/Serious Injury Collision Types and Conditions <br />All Counties - Co. <br />Kittitos County <br />Maintained Roads <br />Ali Public Roads <br /># <br />%of <br /># <br />%of <br /># <br />%of <br />Collision Type <br />crashes <br />crashes <br />crashes <br />crashes <br />crashes <br />crashes <br />Hit Fixed Object- Roadway Ditch <br />3 <br />21.4% <br />153 <br />13.1% <br />307 <br />9.7% <br />Hit Fixed Object- Ran Over Embankment <br />3 <br />21.4% <br />110 <br />9.4% <br />273 <br />8.6% <br />Hit Fixed Object- Earth Bank <br />2 <br />14.3% <br />108 <br />9.3% <br />230 <br />7.3% <br />Hit Fixed Object - Fence <br />1 <br />7.1% <br />102 <br />8.8% <br />199 <br />6.3% <br />Hit Fixed Object -Guardrail <br />1 <br />7.1% <br />49 <br />1.7% <br />237 <br />7.5% <br />Hit Fixed Object -Utility Pole <br />1 <br />7.1% <br />136 <br />4.5% <br />284 <br />9.0% <br />Hit Fixed Object -Tree <br />1 <br />7.1% <br />281 <br />10.3% <br />589 <br />18.6% <br />Hit Fixed Object- Luminaire Pole <br />1 <br />7.1% <br />4 <br />1.5% <br />50 <br />1.6% <br />Hit Fixed Object - Drawbridge Crossing Arm Gate <br />1 <br />7.1% <br />1 <br />1.5% <br />1 <br />0.0% <br />Total Hit Fixed Object <br />14 <br />53.8% <br />1,165 <br />43.2% <br />3,159 <br />28.7% <br />Overturn <br />7 <br />26.9% <br />311 <br />11.5% <br />965 <br />8.8% <br />Light Condition - Dark, No Street Lights <br />5 <br />19.2% <br />788 <br />29.2% <br />1,791 <br />16.3% <br />Light Condition - Dusk <br />3 <br />11.5% <br />96 <br />3.6% <br />339 <br />3.1% <br />Light Condition - Dark, Street Lights On <br />2 <br />7.7 <br />251 <br />9.3% <br />2,370 <br />21.5% <br />Light Condition - Dawn <br />1 <br />3.8 <br />48 <br />1.8% <br />162 <br />1.5% <br />TOTAL Light Condition <br />11 <br />42.3% <br />1,187 <br />45.7% <br />4,836 <br />44.0% <br />Non -Intersection - Not Related <br />17 <br />65.4% <br />1,815 <br />67.2% <br />5,963 <br />54.2% <br />Road Curvature - Horizontal Curve13 <br />50% <br />1,038 <br />38.5% <br />2,868 <br />26.1% <br />Over Centerline <br />2 <br />5.3% <br />485 <br />12.5% <br />1,215 <br />8.3% <br />Motorcycle <br />5 <br />15.2% <br />570 <br />15.4% <br />2,215 <br />13.2% <br />Posted Speed at 50 mph <br />22 <br />73.3% <br />878 <br />25.8% <br />1,663 <br />11.2% <br />