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DATE: 06 -20 -97 FROM: CIRCLE PINES/LEXINGTON POLICE max" TO: JIM MARCH RE:TRAFFIC CONTROL CHANGE- 73 AVE AND OLD MILL ROAD CC: CENTERVILLE CITY COUNCIL Mr. March Per your request, we are evaluating the possibility of placing stop signs at East and West bound 73 Ave. at Old Mill Rd. As you know this will change this intersection to an all way stop. It is our understanding that some residents in that area have concerns about the safety of their children due to the current control of that intersection, stop sign at South bound Old Mill Road at 73` Ave. only. We are sympathetic with the concerns of the residents in the area and will attempt to explore this problem based on guide lines set forth by the Manual on Uniform Traffic Control Devices, M.U.T.C.D. Section 2B -6 In the M.U.T.C.D. Guide Lines, studies have shown that (all way) stops do not have a significant impact on vehicle speeds. In midblock areas, where most accidents involving young pedestrians occur, speed increases are frequently the cause. In some cases accidents actually increase, possibly due to the stop signs being unexpected or deemed unnecessary thereby encouraging rolling stops, or by instilling a false sense of security in crossing motorists and pedestrians. This study defines the "Warrants" or justification for (all way stops), as follows: 1) An accident problem, as indicated by five or more reported accidents of a type susceptible of correction by a multiway stop installation in a 12 month period. These include Right and Left turn collisions, as well as Right angle collisions. 2) Minimum traffic volumes: Average of 500 Vehicles per hour for any eight hours /average day. Combined vehicle /pedestrian volumes from the minor street or highway (Old Mill Road) must average 200 units per hour for the same eight hours, with an average delay to minor street (Old Mill Road) vehicular traffic of at least 30 seconds per vehicle during the maximum hour. 3) When 85% of approach speed of the major street, (73 Ave.) exceeds 40 MPH, the minimum vehicular volume warrant is 70% of the above requirements. To clarify the above requirements: 1) 5 or more reported accidents that are avoidable during a 12 month period with the installation of all way stop signs.