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Dennis Welsch May 9, 1996 Page 5 · The Commerce Street intersections with N. Albert Street and Hamline A venue The analysis consisted of comparing the recent accident rates at these locations to statewide average rates for similarly controlled intersections and computing critical accident rates if the actual rate was greater than the statewide average. A comparison of the actual rate to the critical rate would provide a statistically significant analysis to determine potentially hazardous locations that accounted for the randomness of accidents. The recent (1993 through 1995) accident history data was obtained from MnDOT and compared to statewide average rates of 0.56 accidents per million entering vehicles (acc.fMEV) for through/stop controlled intersections and 1.16 acc.fMEV for signalized intersections with left turn lanes and phasing. The results of the analysis are documented in Table 2 and outlined below. The CR BffH 51 intersection is the only intersection where the recent accident rate of 2.06 acc./MEV exceeded the statewide average rate of 1.16 acc.! MEV. The recent accident rate (2.06 acc.fMEV) at the CR BffH 51 intersection also exceeded the computed critical accident rate of 1.54 acc.fMEV. This means that the accident frequency at this intersection is statistically greater than the average for similar intersections and is an indication of a potentially hazardous condition. Conclusions · The existing slip ramps from N. Albert Street to eastbound TH 36 are substandard. The design configuration and close spacing (1,000 feet) with the upstream interchange at TH 51 and downstream interchange at Lexington A venue (1,900 feet) are undesirable based on current standards. The existing State Farm office building generates 60 inbound and 516 outbound vehicle trips during the 4:30 to 5:30 PM peak hour of an average weekday. The existing weekday PM peak hour traffic distribution from the State Farm office building is mostly oriented towards the northeast with 40 percent to the east on TH 36 and 26 percent to the north on Hamline A venue. Capacity analyses indicate that all of the key intersections surrounding the State Farm site currently operate at acceptable levels of congestion during both the weekday PM peak hour and weekend-day peak hour, with the exception of the CR BffH 51 intersection, which currently operates at LOS F during both time periods. However, field observations of the intersection operations during peak demand periods indicate that traffic does clear the intersection during most signal cycles.