6B(1) Resolution No. 2648 - Laserfiche WebLink

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City of South Bend William and Lafayette Two-Way Conversion December 7, 2009 Page 3 of 5 2. Obtain and review existing signal timing data for signalized intersections. This information will need to be provided by the City and/or INDOT. 3. Existing geometries of the study area, including number of lanes, auxiliary lanes, turn restrictions, on-street parking, etc. TASK 4 -TRIP GENERATION. TRIP REDI$TRtBUTtOtV 8~ TRAFFIC ASSIGNMENT This task will consist of projecting the anticipated redistribution of traffic as a result of changing William Street and Lafayette Blvd. from one-way streets to two-way streets. For this analysis, we propose to utilize the previously prepared DLZ study for Main St./St. Joseph St.lMichigan St. two-way traffic conversion to the extent feasible. It will be important that the City Engineering office participate in reviewing the redistribution analysis prior to completing the detailed analysis of the intersections within the study area. The redistributed traffic information will then be utilized to model traffic projections at the individual intersections to project individual turning movements at each intersection within the study area. This information will be used in several of the analysis items in Task 5. For the purposes of this study, a horizon year of 2025 and an appropriate growth rate will be developed to be utilized for the projected future traffic. This matches the methodology and horizon year used in the previous DLZ study. to addition to the above redistribution, it will be important to incorporate the redevelopment of the future site located north of Coveleski Park. This task will involve projecting new traffic to/from this site and distributing it within the study area. It will be important for the City to aide in a determination of what development will occur on this site. The traffic projected from this site will be added to the future (2025} scenario. TASK 5- ANALYSIS This task will involve the analysis of two scenarios as follows: 1. Existing traffic conditions after the two-way conversion 2. Future (2025) traffic conditions with two-way conversion Note that no analysis is being proposed for the existing condition of the one-way pair. This analysis could be completed at the City's request, but is not included in the scope of this study. The analysis will be performed at all intersections within the study area for the AM and PM peak periods as determined by the traffic count data. For the analysis, a model will be developed using the Syncho 7 software. The following is a list of analyses that will be performed at each intersection within the study area: 1, Capacity analysis, including level-of-service and delay calculations 2. Queuing analysis at all approaches to the intersections 3. Evaluation and warrant analyses to determine the most suitable traffic control (i.e. traffic signal, 4-way stop, 2-way stop)