25E - AGMT - GRAND TRAFFIC SIGNAL SYNC PROJECT

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COOPERATIVE AGREEMENT NO. C -3 -2084 ATTACHMENT A KRAEMER BOULEVARD i GLASSELL STREET I GRAND AVENUE — TSSP (nodes or links) must be approved by the Section Manager III — Planning /GIS, Planning and Analysis for OCTA. CONSULTANT shall calibrate the model based on travel time, delay studles, field observations of queue lengths, and saturation flows for heavy movements at key intersections. It is recommended that the CONSULTANT utilize the Bing TM Map feature from PTV Vistro 2 or Synchro 8 in the development of the base layout files. Tru- Traffic Software version 10.0 or latest release should be used, subsequent to initial optimization, to augment and enhance green band throughput. (offset,. splits, phase. rotation);..and,Ao . incorporate., specific off.. band coordinated,. .... traffic platoons into the corridor operation as required by data analysis and field observations. The CONSULTANT may use their own numbering scheme for use in Synchro analysis if the volume balancing and other factors becomes an issue with node numbering In regard to OCTA ROADS Database. If the CONSULTANT chooses to use this methodology, the requirement for submittal of the database in the ROADS format is still required, The extra node numbering used for volume balancing nodes and other factors must be removed upon final submittal of the Synchro document that will be Incorporated Into the ROADS database. These operations will be closely monitored and controlled through the APM and the Section Manager of the GIS department of Planning. CONSULTANT shall evaluate signal timing and coordination parameters with consideration for the following: o Optimize coordination timing using: • Modified Phase Sequence Rotation • Lead /Lead • Lead /Lag • Lag /Lead • Lag /Lag • Leading and Lagging the same phase within a given cycle • Protected /Permissive operations • Phasing will be lead /lead only; or, • Flashing Yellow Arrow technique may be employed for lead /lag If controlling /owner AGENCY permits Its use • Harmonic cycling — double, half, third or other harmonic multiple, • Other innovative techniques upon approval of the owning agency and the APM CONSULTANT will measure the saturation flow rates at key project intersections during one peak hour where the overall intersection volume -to- capacity ratio is greater than or equal to O'S as a calibration for the Synchro model o 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. Pedestrian Intervals shall be examined and retimed to current adopted standards by each respective AGENCY. CONSULTANT should note that proposed now pedestrian timing standards have been approved at the Federal and 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. 'A�2 2 %