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City of San Marcos Transportation Master Plan <br />Scope of Services <br />1) A technical memorandum summarizing the methodologies for collection and projection of the <br />following technical data. All raw data will be compiled and submitted to the City. <br />a. Traffic Analysis Zones; <br />b. Raw data for traffic counts; <br />c. Population and employment (existing and projected); and <br />d. Updated roadway inventory, roadway classification system map. <br />2) The following maps at a minimum: <br />a. Traffic Analysis Zones; <br />b. Roadway Inventory; <br />c. Roadway Classification; and <br />d. Traffic Volumes. <br />TASK 5 — Travel Demand Model, Corridor Analysis and Travel Surveys <br />City of San Marcos has recently completed a detailed travel demand modeling exercise as part of the <br />Comprehensive Plan development process. The travel demand model developed as part of the <br />Comprehensive Plan and the CAMPO model will be utilized to obtain regional and local travel demand <br />forecasts. HDR will verify the estimates for projected population and employment at the census tract and traffic <br />analysis zone levels that were used as inputs to the Travel Demand Model (in Task 4). HDR will develop a No- <br />Build and Build Travel Demand Model for years 2025 and 2035 in addition to the calibrated 2010 Base Year <br />models. HDR will utilize the updated Travel Demand Model to accomplish the following tasks: <br />Task 5.1 — Travel Demand Model for Build Condition — HDR will update the City's Travel Demand <br />Models as necessary to develop traffic forecasts for years 2025 and 2035 in addition to the 2010 Base Year. <br />Link volumes estimates and intersection turning movement estimates will be extracted from the TDM for <br />utilization in the corridor analysis. <br />Task 5.2 — Corridor Analysis — HDR will provide detailed corridor analysis using traffic simulation <br />software, Synchro, and travel surveys. Detailed study of traffic operations at up to 20 critical locations <br />along selected corridors will be conducted to determine recommendations for mitigating existing and <br />projected traffic problems. The intersections to be evaluated during this effort will be selected by City <br />staff in coordination with HDR based on the updated travel demand model, currently documented <br />congested locations, existing conditions analysis and public input. <br />Using existing geometric and traffic volume information described herein, HDR will code the AM and PM <br />peak hour Synchro models to reflect transportation network configurations for existing traffic conditions. <br />Existing condition results will be used as a basis for comparison for future year alternatives. Traffic <br />operations at congested locations will be evaluated to determine short-term improvement solutions that <br />will be included in the near -term Capital Improvement Project list. <br />Using the inventory of existing data, newly collected data, and the results of the calibrated and validated <br />Travel Demand Model, HDR will produce and calibrate the Corridor Simulation models using Synchro for <br />no -build and build conditions for the forecast years (2025 and 2035). Corridor forecasts obtained from the <br />travel demand models will be adjusted as necessary to account for alternate routes and multimodal <br />improvements. Potential roadway improvements will be identified as part of corridor /intersection analysis. <br />Anticipated mobility and access improvements will be identified and modeled to determine their impact in <br />improving the future transportation system. Roadway segments identified with a decreasing quality of <br />Level -Of- Service will be investigated to determine if the deficiencies are caused by geometric constraints. <br />Proposed projects /alternatives developed in Task 6 will include all modes of transportation, including <br />vehicular, pedestrian, transit, and bicycle. Transportation System Management (TSM) and Travel <br />Demand Management (TDM) measures will be investigated, with TSM measures tested for suitability <br />during the Corridor Analysis. Long term roadway improvements will be developed from the updated travel <br />demand models. <br />City of San Marcos Transportation Master Plan 5 <br />