In the County of Los Angeles, a Transportation Impact Analysis (TIA) is required for certain projects to assess the impacts or deficiencies on the circulation system. Here's a summary of when a TIA is needed and what it entails:
Criteria for Requiring a Transportation Impact Analysis
Development Projects:
- Net Increase in Daily Vehicle Trips: A TIA is required for development projects that are estimated to generate a net increase of 110 or more daily vehicle trips.
Transportation Projects:
- Inducing Additional Vehicle Miles Traveled (VMT): A TIA is needed for transportation projects likely to increase VMT by boosting vehicle capacity.
Other Cases:
- Mandated by Authority: Projects for which a TIA is required by County ordinance, regulation, resolution, court order, or a directive from the Board of Supervisors or the Regional Planning Commission.
Purpose of a Transportation Impact Analysis
A TIA involves:
- Analysis and Forecasting: Assessing the impacts or deficiencies that the project may have on the existing circulation system.
- Identifying Corrective Measures: Proposing feasible measures or conditions to mitigate any identified impacts or deficiencies.
Professional Requirements
- Preparation and Submission: The TIA must be prepared under the direction of, and signed by, a Professional Engineer registered in the State of California to practice either Traffic or Civil Engineering.
By adhering to these guidelines, the County of Los Angeles ensures that development and transportation projects are analyzed for their potential impacts on traffic and transportation systems, and appropriate measures are taken to mitigate any adverse effects.
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