SCREENING CRITERIA AND SELECTION PROCESS
In August 2012, Staff recommended advancing the following five Alternatives for detailed study:
- No Build
- TSM/TDM
- BRT 6X with refinements – Los Angeles to Pasadena
- LRT 4X with refinements – East Los Angles to Pasadena
- F-7X with refinements (freeway tunnel) – Connecting the north and south termini of the existing SR 710
Staff also recommended that refinements be considered for each alternative to enhance their performance and
minimize impacts.
The Alternatives were chosen based on a three-step screening process:
1) Preliminary screening
2) Initial screening
3) Secondary screening
The preliminary screening process considered over one hundred alternative concepts, identified through the public scoping process, with a wide range of transportation modes including: freeway (at-grade, elevated and underground), highway, Bus Rapid Transit (BRT), Light Rail Transit (LRT), commuter rail, freight rail, Transportation System Management/Transportation Demand Management (TSM/TDM), and advanced technologies. The result of the preliminary screening recommended approximately 42 alternative concepts be carried forward.
Then, an initial screening was conducted based on technical evaluations of each alternative, using a comprehensive/qualitative performance assessment matrix that included the Study Purpose and Need, objectives and 23 evaluation criteria. The number of alternatives was then reduced to 12 alternative concepts.
Next, a secondary screening was conducted to evaluate the 12 alternative concepts based on the Purpose and Need, Study Objectives and over 40 detailed performance measures. Five alternatives were recommended for further consideration.
