ARCADIS U.S., INC. (3) - Laserfiche WebLink

Home Browse Search

CITY OF SANTA ANA shall be easily imported and/or exported to and from those programs' respective database. It is recommended that the consultant utilize a GIS shapefile layer as the background from Synchro in the development of the base layout files. Latest Tru-Traffic Software version should be used, subsequent to initial optimization, to augment and enhance green band throughput (offset, splits, phase rotation); and, to incorporate specific off band coordinated traffic platoons into the corridor operation as required by data analysis and field observations. Sub-Task 4.2: Basic Timing Review A. The consultant shall gather Caltrans standards, guidelines, and preferences for basic timing parameters, including walk, pedestrian clearance, yellow, all red, and bicycle clearance. B. Consultant should note that proposed new pedestrian timing standards have been approved at the Federal and State level. Additionally, new State standards have been adopted for yellow change intervals using the 85th percentile of a newly completed speed survey for a corridor rounded up to the nearest 5-mile an hour increment or the posted speed limit plus an additional 7 miles per hour (MPH) if over 30 MPH or an additional 10 MPH if posted 25 MPH or less. An inclusive table is provided in the latest edition of the California Manual on Uniform Traffic Control Devices (CA MUTCD). PARTIES must be contacted and provide policy and guidance to the consultant for calculations regarding these timing intervals. C. Consultant shall prepare excel tables for each Caltrans intersection on the corridor showing both existing and proposed pedestrian walk, pedestrian clearance, yellow change, and all red clearance intervals based on Agency preference and guidance. Timings will be used in optimized timings analysis and set on control systems in the field during implementation, if not already set. D. Consultant shall receive written approval of final recommended basic timing parameters from all Agency prior to proceeding with optimization of the corridor. Sub-Task 4.3: Concept of Operations A. The consultant shall, in concert with all Agency members, develop a Concept of Operations (CONOPS) for all time periods including AM, MD, PM, Weekend, and FREE operational patterns or plans. CONOPS shall provide operational procedures, plans, and strategies on how the traffic should flow optimally for all directions providing as many successive greens as possible to the motorist whether on the primary coordinated band or traversing from a primary coordinated band to another coordinated band or vice versa. Planned Stops will be allowed only as a last resort and must be approved by the PTF prior to implementation. B. CONOPS shall consider all special generators and known congestion points/areas such as freeway interchanges, schools, or shopping centers and analyze them for specific circulation flows and conditions that may require special plans or queue mitigation (flush) 19