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COOPERATIVE AGREEMENT NO. C-2-2030 <br />ATTACHMENT A <br />standards have been approved at the Federal level and about to be approved <br />at the State level. AGENCIES must be contacted and provide policy and <br />guidance to the CONSULTANT for calculations regarding these timing <br />intervals. <br />o Timing parameters which incorporate minimal pedestrian activity to provide <br />the optimum vehicle split and offset timing and accommodate pedestrians <br />using various pedestrian timing adjustment techniques for pedestrian splits <br />during coordination <br />o Appropriate cycle lengths consistent with the goals of this effort. Additionally, <br />CONSULTANT shall recommend time -of -day start and stop intervals for the <br />various timing plans based on the identified peaks from the 24-hour machine <br />counts, and field observation <br />o CONSULTANT shall prepare, at minimum, a total of three (3) timing plans for <br />a typical weekday which consider the following peak periods; AM PEAK, MID- <br />DAY PEAK, PM PEAK and one (1) timing plan for a typical Saturday for a <br />MID -DAY PEAK. Timing plans should be in both Synchro format and the <br />preferred timing chart format of each local AGENCY. <br />CONSULTANT shall develop an operational model within SimTraffic. The operational <br />analysis will be used to micro — simulate and analyze specific roadway segments with <br />queuing, spill back, starvation, storage blocking, and other queuing interactions, and to <br />analyze and mitigate the conditions discovered by CONSULTANT and/or APM and <br />AGENCIES in field reviews. <br />CONSULTANT shall develop optimized signal timings using the results from <br />Synchro/SimTraffic 8.0, and Tru-Traffic version 10.0 or latest released version and <br />recommend any changes to the signal phasing at each signalized intersection that may <br />improve the efficiency of operations. Output of the modeling software shall not be <br />utilized without proper QA/QC. Engineering judgment shall be utilized to determine final <br />operational parameters. The recommended signal timing plans shall be reviewed by <br />the APM and local AGENCY staff. <br />Upon approval of the optimized signal timings by the Authority and the cities, the <br />CONSULTANT shall implement, or assist local AGENCIES staff in the implementation <br />of new signal timings either through the central traffic signal system (if available) or <br />direct implementation at the intersection controller units. CONSULTANT shall use <br />existing traffic signal interconnection systems, where they exist, and, as a result of the <br />inter -jurisdictional nature of the project, shall implement time -based signal coordination <br />techniques across signals controlled by different AGENCIES. <br />As the project will be using time -based signal coordination, the CONSULTANT shall <br />evaluate the current time -referencing of all traffic signal controllers and recommend a <br />corridor -wide strategy (such as WVVV or GPS clocks) to ensure that all traffic signal <br />controllers are on synchronized time clocks. CONSULTANT shall verify that all Central <br />10 <br />