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Transportation Impact Study Format for City of Buena Park Traffic Impact Analysis Guidelines

Transportation Impact Analysis (TIA) Report Guidelines

All elements outlined in this document should be included unless deemed not applicable. However, any omitted items must receive prior approval from the City. The Transportation Impact Analysis (TIA) report should include the following sections:

1. Executive Summary

The Executive Summary should provide a factual and concise overview of key issues and findings within the report. This section must include:

  • A brief project overview

  • A summary of the project's traffic generation potential

  • The expected Vehicle Miles Traveled (VMT) impacts

  • Mitigation measures necessary to address resultant project impacts

  • Identification of roadway Level of Service (LOS) deficiencies and proposed improvements

2. Introduction

The Introduction should provide a general background of the proposed project and an outline of the study procedures. This section must include:

  • A description of the project site and study area boundaries

  • Identification of existing and proposed site uses

  • A discussion of the roadways and intersections within the study area (as determined by the City)

  • Required exhibits, including:

    • A regional map showing the project vicinity

    • A site layout map illustrating project boundaries and access points

3. Project Description and Location

This section should build upon the Introduction and present detailed information about the project. It must include:

  • A comprehensive development scenario

  • Specific project location details

  • A clear site plan illustration

  • Project density, land use, and layout

  • Information on adjacent roadways and on-site parking supply

  • Proposed traffic circulation within the project site

  • Key project descriptors, including gross square footage, number of units/rooms, and other relevant specifications

  • Documentation of any changes in project descriptors during the permitting process

4. Methodology and Thresholds

This section should outline the methodology used in the analysis, including:

  • The methodology for calculating Level of Service (LOS) and Vehicle Miles Traveled (VMT)

  • The criteria used to determine if a project is exempt from project-level VMT analysis

  • Impact thresholds for VMT analysis and deficient LOS operations for roadways and intersections

5. LOS Analysis

This section must include a comprehensive analysis of the Level of Service (LOS), including:

  • Traffic Generation Forecast: An estimate of the number of trips generated by the project

  • Traffic Distribution and Assignment: The anticipated distribution of project-related trips across the roadway network

  • Traffic Analysis: An evaluation of roadway and intersection operations under existing, background, and future conditions

  • Reference to the "Level of Service Analysis Procedure"

6. On-Site Parking, Access, and Circulation Analysis

This section must assess:

  • The adequacy of on-site parking supply

  • Site access points and potential conflicts

  • Internal circulation patterns for vehicles, pedestrians, and bicyclists

  • Loading zones and emergency vehicle access considerations

  • Reference to the On-Site Parking Analysis (Page 14)

7. Active Transportation and Public Transit Analysis

This section must examine:

  • Consistency with adopted policies, plans, and programs for pedestrian, bicycle, and transit facilities

  • Potential impacts on pedestrian and bicycle connectivity and safety

  • Access to existing and planned public transit services

  • Recommendations to enhance active transportation and transit accessibility

  • Reference to Page 24 for additional guidelines

8. Vehicle Miles Traveled (VMT) Analysis

This section should present:

  • Project-generated VMT per service population for all analysis scenarios

  • The project’s effect on regional VMT for all analysis scenarios

  • Tabular data summarizing VMT calculations

  • Documentation if the project qualifies for screening from project-generated VMT analysis

  • Identification of VMT impacts based on the established thresholds

  • Proposed VMT mitigation measures, including Transportation Demand Management (TDM) strategies

9. Appendix

The Appendix should provide supporting documentation and detailed analysis materials. If the main report is too large, the appendix should be provided as a separate document. The appendix should include:

  • VMT and TDM calculations

  • Traffic count data

  • Intersection Capacity Utilization (ICU) calculation sheets

  • Fully completed signal warrant analyses

  • Accident diagrams for high-collision locations

  • Conceptual sketches of proposed roadway improvements

  • Any additional information required for City review

This structured approach ensures a thorough and consistent evaluation of transportation impacts, aligning with the City's requirements for development projects.

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