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CENTERVILLE RD (CSAH 21/CSAH 59) AT ASH ST (CR J)/WILKINSON LAKE BLVD PAGE 14 ICE REPORT S.A.P. TBD WSB PROJECT NO. 2988-080 CITY OF LINO LAKES, MN The following is the result of the traffic signal warrant analysis. See Appendix B for additional information. • Warrant 1 – Eight-Hour Vehicle Volume: NOT MET • Warrant 2 – Four-Hour Vehicle Volume: MET • Warrant 3 – Peak-hour Vehicle Volume: MET • Warrant 4 – Pedestrian Volume: N/A • Warrant 5 – School Crossing: N/A • Warrant 6 – Coordinated Signal System: N/A • Warrant 7 – Crash Experience: NOT MET • Warrant 9 – Intersection Near a Grade Crossing: N/A Signal Warrants 2 and 3 are met with existing traffic volumes, lane geometry, and speed limits. Roundabout Criteria Although no traffic warrants for roundabouts currently exist, the MnDOT Intersection Control Evaluation Manual states that if a traffic signal or an all-way stop warrant is met, a roundabout should also be considered as a warranted traffic control device. As discussed above the intersection is currently controlled by an all-way stop and does meet traffic signal warrants. The Intersection Control Evaluation Manual also states that site-specific safety issues may cause a roundabout to be justified. As seen in Table 4, a roundabout would reduce the current crash rate. Furthermore, a roundabout will improve future roadway conditions as shown in the Operational Analysis section of this report. Crash Evaluation Crash reductions for each type of intersection control were estimated based on the proposed layout and the crash reduction factors from the Federal Highway Administration (FHWA) Crash Reduction Factors and the Minnesota Department of Transportation (MnDOT) Roundabout Crash Reduction Factors. Table 4 shows the projected crash rate and yearly crashes for each traffic control type using the existing traffic volumes. Fewer crashes mean a reduced cost to the local economy in terms of lost productivity related to property damage, injuries, and congestion on local roadways.