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CENTERVILLE RD (CSAH 21/CSAH 59) AT ASH ST (CR J)/WILKINSON LAKE BLVD PAGE 13 ICE REPORT S.A.P. TBD WSB PROJECT NO. 2988-080 CITY OF LINO LAKES, MN ALTERNATIVE CONTROL ANALYSIS The following traffic control options were studied for the intersection of Centerville Road (CSAH 21/CSAH 59) at Ash Street (CR J): • All-way stop (Existing Condition) • Traffic signal • Roundabout The following subsections detail the criteria and analysis used for determining the appropriate traffic control for this intersection. All-Way Stop Criteria The existing intersection is control with an all-way stop. Part 2B of the Minnesota Manual on Uniform Traffic Control Devices (MnMUTCD) contains information pertaining to the all-way stop control with criteria relating to vehicular volumes and crash history that define the minimum conditions under which installing an all-way stop could be justified. Traffic Signal Warrant Analysis Part 4 of the MnMUTCD contains information pertaining to highway traffic signals, including a series of traffic-signal warrants that define the minimum conditions under which installing a traffic signal could be justified. These traffic signal warrants are considered national guidelines to promote continuity of traffic control devices and to maximize the benefit of traffic signals by selecting the appropriate intersections. The following are the nine MnMUTCD traffic signal warrants: • Warrant 1 - Eight-Hour Vehicle Volume • Warrant 2 - Four-Hour Vehicle Volume • Warrant 3 - Peak Hour Vehicle Volume • Warrant 4 - Pedestrian Volume • Warrant 5 - School Crossing • Warrant 6 - Coordinated Signal System • Warrant 7 - Crash Experience • Warrant 8 - Roadway Network • Warrant 9 - Intersection Near a Grade Crossing Twenty-four hours of turning movements were counted on January 6, 2016 and used to perform the warrant analysis. According to the MnMUTCD, inclusion of right-turn volumes for warrant analysis is dependent on engineering judgment, site factors and turning movement volumes. By applying engineering judgment, right-turn movements on all four approaches of the intersection were removed from the analysis due to the presence of right-turn lanes in each approach.