25D - AGMT - TRAFFIC SIGNAL SYNC

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COOPERATIVE AGREEMENT NO. C-2-1992 ATTACHMENT A at the State level. AGENCIES must be contacted and provide policy and guidance to the CONSULTANT for calculations regarding these timing intervals. o Timing parameters which incorporate minimal pedestrian activity to provide the optimum vehicle split and offset timing and accommodate pedestrians using various pedestrian timing adjustment techniques for pedestrian splits during coordination o Appropriate cycle lengths consistent with the goals of this effort. Additionally, CONSULTANT shall recommend time-of-day start and stop intervals for the various timing plans based on the identified peaks from the 24-hour machine counts, and field observation o CONSULTANT shall prepare, at minimum, a total of three (3) timing plans for a typical weekday which consider the following peak periods: AM PEAK, MID- DAY PEAK, PM PEAK and one (1) timing plan for a typical Saturday for a MID-DAY PEAK. Timing plans should be in both Synchro format and the preferred timing chart format of each local AGENCY. CONSULTANT shall develop an operational model within SimTraffic. The operational analysis will be used to micro - simulate and analyze specific roadway segments with queuing, spill back, starvation, storage blocking, and other queuing interactions, and to analyze and mitigate the conditions discovered by CONSULTANT and/or APM and AGENCIES in field reviews. CONSULTANT shall develop optimized signal timings using the results from Synchro/SimTraffic 8.0, and Tru-Traffic version 10.0 or latest released version and recommend any changes to the signal phasing at each signalized intersection that may improve the efficiency of operations. Output of the modeling software shall not be utilized without proper QA/QC. Engineering judgment shall be utilized to determine final operational parameters. The recommended signal timing plans shall be reviewed by the APM and local AGENCY staff. Upon approval of the optimized signal timings by the Authority and the cities, the CONSULTANT shall implement, or assist local AGENCIES staff in the implementation of new signal timings either through the central traffic signal system (if available) or direct implementation at the intersection controller units. CONSULTANT shall use existing traffic signal interconnection systems, where they exist, and, as a result of the inter jurisdictional nature of the project, shall implement time-based signal coordination techniques across. signals controlled by different AGENCIES. As the project will be using time-based signal coordination, the CONSULTANT shall evaluate the current time-referencing of all traffic signal controllers and recommend a corridor-wide strategy (such as WWV or GPS clocks) to ensure that all traffic signal controllers are on synchronized time clocks. CONSULTANT shall verify that all Central 10 25D-27