2017-046 - Approving Addendum Nos. 1 and 2

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Santa Ana — Garden Grove Streetcar Project Traffic Study Addendum traffic signals would need to be preempted during streetcar crossing events. The Addendum analyzes the interaction of both intersections with traffic signal preemption. • Traffic Signal Priority for Streetcar — The Traffic Impact Assessment conducted for the Project did not assume any traffic signal preemption or priority (TSP) for the streetcar. The Project design concept now calls for TSP to be provided at signalized intersections along the proposed streetcar alignment (with the exception of Santa Ana Boulevard at Main Street, Broadway, and Bristol Street). The Addendum provides a new analysis at each of the affected intersections along the alignment with TSP implementation. • Street Design Concept for Santa Ana Boulevard — The project proposes to reconfigure portions of Santa Ana Boulevard between Raitt Street and SARTC to accommodate a bike lane on the north side of the street throughout the alignment as well as 14 -inch high platforms. The Addendum provides an updated level of service analysis reflecting the proposed geometric configuration. 1.2 Report Organization Chapter 1 Introduction — This chapter provides an introduction to the previous analysis conducted for the Project, the purpose of the Traffic Study Addendum (summary of Project modifications and new analysis), and an overview of the organization of the report. Chapter Analysis Methodologies -Thischapter clescribesthe methodology, analysis procedures, significance criteria, and standards utilized, to evaluate roadway and intersection traffic conditions for each analysis scenario. Chapter 3 Impact Assessment —This chapter describes traffic operational impacts of the four proposed Project modifications and additional analysis scenarios (Santa Ana Boulevard Reclassification Analysis, Santa Ana Boulevard Station Relocation Analysis, Fairview Street Grade Crossing Analysis, Traffic Signal Priority Analysis, and the proposed Santa Ana Boulevard Design Concept). Chapter 4 Mitigation Measures — This section provides an overview of proposed mitigation measures for the Project (if applicable). Chapter 5 Summary and Conclusion —This chapter summarizes analysis presented in the preceding chapters. ® 2 f��