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Mr. Steve Ach -3- September 17, 1993 • TRAFFIC ANALYSIS The traffic analysis items are organized according to issues raised in the comment letters referenced earlier in this memorandum. Traffic Operations on School Street Between Freeport Avenue and T.H. 169 Indepth analyses regarding level of service, queuing and signal coordination have been performed to address the important aspects involving this segment of School Street. The capacity analyses have indicated that the intersections of School Street and Freeport Avenue will accommodate the projected 1997 post-development volumes at level of service C and that the intersection of School Street and T.H. 169 will operate at level of service D. Queuing analyses have indicated that, under 1997 p.m. peak hour post-development conditions, the 90th percentile queuing for left turns from the gazt on School Street Freeport to the south.op Avenue , ill be nine ve_�hides_and the 90th percentile queuing for left turns from the west on School Street to the north on T.H. 169 will be 11 vehicles. Work sheets documenting the capacity and queuing analyses have been provided under separate cover to staff of Maier Stewart and Mn/DOT. Another important element to ensure effective traffic operations on the subject portion of School Street is that efficient coordination is provided between the existing traffic signal at T.H. 169 and the future signal at Freeport Avenue. A concept plan for the integrated timing of these two signals has been developed and is shown in Figure 1. With this type of timing plan, we are confident that traffic will flow efficiently through • the two signalized intersections, without undue delays, queuing, or interference being caused. Based on the preceding analysis results, an updated concept plan has been developed for the segment of School Street between Freeport Avenue and T.H. 169. As shown in Figure 2, this plan will involve widening of School Street to achieve the necessary through lanes and turn lanes. The two westbound through lanes that are shown east of Freeport Avenue would merge together west of Freeport Avenue to the existing single westbound through lane. Access on Jackson Avenue for Taco Bell Use In the context of the former development plan, we conducted extensive analyses regarding the feasibility of access on this portion of Jackson Avenue for the northernmost development components. As presented in a memorandum we prepared dates October 20, 1992, we determined that such access meets necessary sight distance requirements and thus is fully feasible. Thus, it is our conclusion that the proposed access for Taco Bell is satisfactory and will not cause adverse effects. Right Turn In and Out Only Access on T.H. 169 ,`4 Mn/DOT staff have confirmed that one right turn in and out only access point on T.H. • 169 is acceptable. The proposed right turn access point will be designed and constructed to fully comply with Mn/DOT standards.