Res 2025-188 Approving an on-call professional services agreement with Kimley-Horn and Associates Inc. for the the Transportation Master Plan Update Project.

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Docusign Envelope ID: BB4FCDA1-A564-4=-13116-E72FBD797168 The CONSULTANT team, after preparing the model, will then: • Code the additional roadways within the City modeling boundaries and the new centroid connectors associated with the split TAZs. • Incorporate the socio-demographic information from the City into the TAZ geographic file input into the model. The CONSULTANT team will calibrate the existing model so that assigned volumes in the base year match available 2025 counts. Calibration may require revisiting facility and area type classifications, factoring trip generation trip rates, as well as post -processing model outputs for the base year. The CONSULTANT team will refer to FHWA acceptable ranges for volume to count ratios to determine how closely assigned volumes match observed traffic counts. The model calibration step may require building a post -processor which adjusts forecast year volumes based on base year validation metrics. The post - processor will follow NCHRP methods to post -process traffic volumes. The CONSULTANT expects to receive the following data to undertake the calibration of the model: • A working base model (CAMPO) • Land use forecasts (City) • Network improvements (City and from TMP development) • Traffic counts (City, TxDOT, and select counts as described in Task 3.3) The CONSULTANT will NOT conduct any primary or secondary data collection. Deliverables: Base and Forecast Year Travel Demand Models 4.2 Travel Demand Model Scenario Planning With oversight from the CONSULTANT team will run a total of five (5) scenarios on the Existing and Forecast Year models and extract performance measures for each run. The scenarios will include: • Existing Condition (2025) • Intermediate year model with 2035 forecasted traffic volumes excluding any programmed projects (2050 NO BUILD) • Intermediate year model with 2035 forecasted traffic volumes representing the updated TMP prioritized projects (2035 BUILD) • Forecast year model with 2050 forecasted traffic volumes excluding any programmed projects (2050 NO BUILD) • Forecast year model with 2050 forecasted traffic volumes representing the all updated TMP projects (2050 BUILD) The CONSULTANT team will provide documentation regarding the model preparation and calibration process as well as performance measures extracted in support of the TMP. Deliverables: Model Scenarios, Model Scenario Outputs, Model Documentation City of San Marcos Kimley-Horn and Associates, Inc. TMP Exhibit B Scope of Services Page 12 August 21, 2025