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04-12-21-R
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04-12-21-R
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<br /> <br /> <br />COUNTY ROAD E & OLD SNELLING AVENUE ICE PAGE 5 <br />WSB PROJECT NO. 011498-000 <br />CITY OF ARDEN HILLS <br />entering vehicles compared to the average rate of 0.34 for all-way stop intersections. The <br />crash rate is higher than the critical rate of 0.65 , and the severity rate of 0.76 is higher <br />than the Statewide average severity rate of 0.5. A Crash Diagram can be found in <br />Appendix B. <br /> <br /> <br />Table 1 – Existing Crash Rate Calculation <br /> <br />Future Conditions <br /> <br />The County Road E corridor is projected to see an increase in traffic over the coming <br />years with the Bethel University expansion. Two alternatives for intersection modifications <br />include the construction of a traffic signal and the construction of a single-lane roundabout <br />at the intersection of County Road E and Old Snelling Avenue . The traffic signal- <br />controlled intersection would likely maintain similar geometry as the existing condition, <br />but the single-lane roundabout would require modified geometry which i s shown in Figure <br />3. <br /> <br />Both the traffic signal and roundabout alternatives are believed to accommodate future <br />growth in the area, but the roundabout is believed to provide a safer alternative than the <br />traffic signal alternative and current all-way stop control. <br /> <br /> <br /> <br />Calculated Average**Critical***Calculated Average** <br />County Road E and Old Snelling <br />(2013-2015)9 12,000 0.68 0.34 0.65 0.76 0.50 <br />Crash Rate*Number of <br />Crashes <br />Daily Entering <br />VehiclesLocation <br />***Critical crash rates are expressed in crashes per million entering vehicles with 0.95 confidence level. <br />Severity Rate <br />**Average for all-way stop intersections using MnDOT 2015 green sheets. <br />*Intersection crash rates are expressed in crashes per million entering vehicles. <br />County Road E and Old Snelling (2013-2015)
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