The framework for the General Plan (GP) Consistency Traffic Impact Analysis (TIA) Guidelines for the City of Temecula. Below is a concise breakdown of key sections and their significance:
1. Introduction
- Establishes the purpose: a standard approach to assess traffic impacts of land use changes and developments.
- Requirements: TIA must be signed and stamped by a registered California Traffic or Civil Engineer.
2. Purpose
- GP Consistency TIA is mandatory for:
- General Plan Amendments.
- Specific Plans.
- Zone changes.
- Must evaluate:
- If the ultimate circulation system maintains the required Level of Service (LOS).
- Feasibility of delay reduction measures.
- Focused Traffic Study may be needed for smaller-scale projects (e.g., Development Plans).
3. Exemptions
- Exempts specific project types (e.g., small residential projects, schools, parks) unless unique traffic concerns arise.
- Projects generating fewer than 100 vehicle trips during peak hours are typically exempt but subject to discretion.
4. Coordination with the City
- Engineers must develop a Scoping Agreement to:
- Define the study area.
- Include traffic data assumptions and interactions with city/state models.
- Address concerns of nearby jurisdictions or Caltrans, if applicable.
5. GP Consistency TIA Format
- Specifies a structured report with essential elements such as:
- LOS analysis.
- Safety evaluations.
- Traffic signal warrant analysis.
- Feasibility of delay reduction measures.
- Special requirements for truck-intensive projects or unique facilities (e.g., stadiums).
5.1 Study Area
- Includes intersections and roads affected by 50+ peak hour trips from the project.
- Additional areas may be studied per City discretion.
5.2 Analysis Scenarios
- TIAs must assess traffic under various conditions:
- Existing.
- Existing with project.
- Opening year (with/without project).
- Cumulative impacts.
- General Plan Buildout.
- Focused studies analyze a narrower scope.
5.3 LOS Analysis
- Minimum thresholds:
- LOS D or better at intersections.
- LOS E for arterial links.
- LOS F is acceptable on Old Town Front Street within specific bounds.
- A 2.0-second delay increase at LOS E/F intersections signifies significant impact, requiring mitigation.
5.4 - 5.6 Additional Analyses
- Traffic Signal Warrant Analysis: Determines need for new signals using CA MUTCD standards.
- On-Site Circulation: Ensures safe and efficient internal traffic flow.
- Safety and Operational Improvements: Addresses increased demands on existing infrastructure.
6. Delay Reduction Measures
- Identifies feasible mitigations (e.g., lane additions, signal timing) for all traffic conditions analyzed.
- Right-of-way acquisition may be required, falling under project proponent responsibilities.
6.1 Project Fair Share
- Calculations determine the proportional cost of improvements attributable to the project.
6.2 General Plan Conformance
- Ensures the project aligns with or necessitates updates to the General Plan's circulation system.
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