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I I . WORK PROGRAM This chapter consists of a description of individual tasks of the proposed work program. Tasks are presented in sequential order though some overlap will occur. Task 1: Study Area Definition Through discussions with city staff, we would propose first to identify the study area boundaries. We envision this could include the area within the city limits, extraterritorial jurisdiction and likely areas of future expansion. From this we would prepare a base map. Task 2: Evaluation of Existing Data We would propose to review the data available for San Marcos. This evaluation would include a review of traffic counts available from previous work like that of Walter P. Moore, State Department of Highways and Public Transportation (SDHPT), and the City of San Marcos. During staff discussions, we would also discuss the socio- demographic data in the modeling. Task 3: Delineation of Traffic Serial Zones/Data Base Unit of Analysis With an emphasis on making the traffic serial zones as compatible as possible with other geographical units of analysis (e.g. census tracts, planning areas) and with close staff communication, we would propose to define the transportation network's traffic serial zones. Reviewing special needs of the city staff and evaluating the City's comprehensive plans and area specific plans (e.g. redevelopment, parks) we would also define the traffic serial zones into sectors. Equivalency tables between census tracts, census block groups, traf- fic serial zones, and transportation sectors would be prepared and a map of these various geographic units would also be produced. Task 4: Evaluation of NCHRP Reports "Transferrable Parameters" We would propose to evaluate NCHRP report 187, "Quick-Response Urban Travel Estimation Techniques and Transferrable Parametersll (TRB, 1978), in light of their applicability to San Marcos. We envision this would be a critical study element since the trip generation parameters at the smallest sized population category are for urbanized areas from 50,000 to 100,000 population. Specifically, the Report 187 trip generation tables would be evaluated against the ITE Trip Generation Manual (3rd edition, 1982), Special Traffic Generator Study (SDHPT, 1974), Trip Generation Analysis, 1975, and other Texas data, as available. Specifically, we propose to evaluate Table 1, "Average Vehicle Trip Rates and Other Characteristics of Generators," in terms of vehicle trips and peaking characteristics. For the different land uses, we would provide ranges of trip generation, by source of information and recommend a mean rate. We envision part of this analysis will entail limited research into the temporal stability and transferrability of 2