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Mike Tassano January 31, 2025 Page 9 of 37 Circulation Analysis The primary tool to assess the effects of the potential extension on the circulation system is the City of Pleasanton Model. This travel demand model was used to understand how traffic would be re-routed with the extension and how much traffic El Charro Road relieves from competing routes, as well as other local or regional travel behavior shifts caused by the extension. The following two scenarios were analyzed: • Approved (Near-term) No Extension Conditions – Existing land use and roadway system configuration, plus traffic estimates for approved and pending developments and/or traffic increases due to regional growth and transportation system improvements anticipated to be completed, without the extension. Traffic volumes for this scenario were forecast using the City of Pleasanton’s travel demand model. • Approved (Near-term) Plus Extension Conditions – Existing land use and roadway system configuration, plus traffic estimates for approved and pending developments and/or traffic increases due to regional growth and transportation system improvements anticipated to be completed, plus the extension. Traffic volumes for this scenario were forecast using the City of Pleasanton’s travel demand model. Due to the project’s potential to alter regional travel through and around Pleasanton, the Alameda CTC Model was consulted to compare and verify the parameters and results of the model. A land use comparison by traffic analysis zone (TAZ) between both models was performed and revealed that both models assume similar land use characteristics and magnitudes in TAZs around the study area; and in those TAZs where there are differences, the City of Pleasanton Model more accurately captures the existing conditions as well as planned and approved projects. When comparing the general results across both models, the City of Pleasanton Model showed more accurate and granular results at a local level, showing how the extension could shift existing traffic from competing routes, while the Alameda CTC model presented better results at a regional level, helping understand the regional and cut-through traffic present in the study area, which helped confirm the existing cut-through assessment results presented above. Because the City of Pleasanton Model seems to compare and validate well against existing counts, StreetLight data, and the Alameda CTC Model, no model refinements were needed, and these results were used as-is to analyze traffic operations under the four study scenarios described above and assess the potential impacts of the extension. The travel effects of the proposed extension were calculated and measured using the following metrics: traffic volume (diversion), intersection LOS at key locations, and travel times on key links.