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12 SECTION D Project Approach and Understanding RFQ # 21-11-01 PROFESSIONAL PLANNING AND ZONING CONSULTING SERVICES, CIVIL AND TRAFFIC ENGIEERING ► Microsimulation Validation- Existing and Future Level of Service Conditions The validation of the intersection capacity analysis using microsimulation modeling software, such as Synchro and HCS, will follow standard procedures and accepted industry standards. The following will be checked by the Corradino Team to ensure that the model run is valid: ● The peak-season adjusted traffic counts will be cross- checked to ensure the appropriate turning movements have been used from the traffic count datasheets. ● The appropriate site-generated trips for the subject property will be checked to ensure the correct trip assignment has been used from the intersection volume worksheet. ● The appropriate committed trips from approved developments will be checked to ensure that the correct trip assignment has been used from the intersection volume worksheet. ● The signal timing worksheets from the Miami-Dade County Traffic Engineering Division will be checked to ensure that the appropriate signal phase and cycle length have been used in the model. ● The signage at the existing intersection will be checked to confirm that there are no movement restrictions (such as U-turns) to ensure that the model accurately reflects the current field conditions. ● There will be an existing conditions scenario, future conditions without project scenario and future conditions with project scenario model runs. Supplemental research is sometimes required to determine if certain intersection approaches are still operating sufficiently in the field. The intersection capacity analyses may indicate that a failing condition is occurring along one approach. Field observations may be justified to confirm this condition, especially if right-of-way constraints are present. Emerging technology, such as aerial unmanned drones may be used to document vehicular queuing during peak times as a method of validation. ►Traffic Mitigation Improvements Validating required improvements due to the effects of site-generated trips on the roadway network and related intersections will be completed. The process includes evaluating the level-of-service for the intersection and road segment capacities. The intersection capacity analysis will be checked to ensure that there are no locations where vehicle queuing during peak periods is extending past the existing turn-lane storage lengths. As part of this validation, the 95th percentile vehicle queues will be checked for each of the three scenarios. If there are scenarios where this problem exists, a concept plan will be required by the applicant's traffic consultant to confirm that extending these turn-lanes is feasible. Similarly, if there are new turn-lanes proposed, a concept plan will be required to verify that the improvement is feasible. The road segment analysis will be reviewed to determine if there is available capacity along the adjacent road network. ►Ride Share Vehicle Operations Review of site plan applications, and related traffic impact studies, needs to include the siting of ride-share vehicle operations, in addition to delivery and loading zones. Each of these are important to overall vehicle circulation. The Corradino Team will ensure that applicants have a separate narrative in the traffic impact studies to ensure that all modes of transportation are considered. This review of alternative modes should address bicycle, pedestrian, transit and rideshare options. The Corradino Team will use available resources from National Association of City transportation Officials (NACTO) and ITE, such as the Curb Productivity Index, that measures the number of people using a curb per hour. In an urban setting, this is usually measured against 20-feet of curb, which is equivalent to the size of a typical on-street parking space. This index can help optimize the actual space allocation of the curb for the most productive uses. There are three broad strategies identified by NACTO for improving curb productivity and they include the following: ● Relocate curb space to better utilize the curb zone; ● Convert curb space to different uses to better utilize the curb zone; and, ● Convert curb spaces to flexible time-of-day zones to meet demand-based uses throughout the day.