ORANGE COUNTY TRANSPORTATION AUTHORITY (OCTA) (C-9-0826)

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MEMORANDUM OF UNDERSTANDING NO. C-9-0826 EXHIBIT A need special operational analysis of queue interactions such as starvation or spillback. The operational analysis shall be used to supplement the "Before" and "After" studies, to understand the effects of planned corridor improvements, fine tune timing plans prior to implementation, and to analyze the additional operational improvements as recommended by CONSULTANT. The entire corridor does not have to be micro — simulated. Analysis shall be performed on corridor segments that have queuing, starvation, spillback, or other problems which can be mitigated by the SimTraffic program. CONSULTANT shall develop final optimized signal timings using Synchro 7.0, and recommend any changes to the signal phasing at each signalized intersection that may improve the efficiency of operations. The recommended final signal timing plans shall be reviewed for comments by the AUTHORITY and agencies' staffs. CONSULTANT shall evaluate signal timing and coordination parameters with consideration for the following: 1. Review and verification of completed design documentation provided and update the signal timing and coordination parameters as deemed appropriate through review findings, field observations, etc. 2. Optimum coordination timing, lead/lag or lead/lead left -turn phasing as deemed appropriate (except at Protected/Permissive locations, where phasing will be lead/lead only), double or half cycling, and other such techniques. 3. Timing parameters which provide adequate splits and corresponding offsets which fully accommodate pedestrians within the split time. CONSULTANT shall take into consideration the pedestrian timing parameters used by the local agency on a case by case basis. 4. 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. 5. Appropriate cycle lengths and signal groupings consistent with the goals of this effort. Preliminary proposed cycle lengths and signal groupings were developed by the previous consultant and presented to the agencies for review and comment. All agency preliminary comments have been addressed by the previous consultant. Additionally, the previous consultant has recommended time -of -day start and stop intervals for the various timing plans. 6. CONSULTANT shall update, at minimum, timing plans which consider the following peak periods: a.m. peak, mid -day peak, p.m. peak and one Scope of Work 38 05/18/10