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Station Capacity and Circulation Report (Final) Task No ` WESTSIDE SUBWAY EXTENSION PROJECT Contract No. PS-4350-2000 Station Capacity and Circulation Report (Final) Task No. 6.3.2 (Deliverable No. 6.3.2.F) Prepared for: Prepared by: 777 South Figueroa Street Suite 1100 Los Angeles, California 90017 Review Copy Date Initials Originator 1/11/2012 DK Checker 2/8/2012 CE Back checker 2/8/2012 DK Verified by 2/8/2012 GA February 8, 2012 Station Capacity and Circulation Report (Final) Table of Contents Table of Contents 1.0 INTRODUCTION .................................................................................................................... 1‐1 2.0 CONTRACT REQUIREMENTS .................................................................................................. 2‐1 3.0 RIDERSHIP FORECASTS .......................................................................................................... 3‐1 4.0 CRITERIA AND ASSUMPTIONS ............................................................................................... 4‐1 4.1 Metro Architectural Design Criteria ................................................................................. 4‐1 4.2 TCRP Report 100 .............................................................................................................. 4‐1 4.3 Emergency Exiting Analysis .............................................................................................. 4‐3 5.0 ANALYTICAL METHODOLOGY ................................................................................................ 5‐1 5.1 Station Platform Capacity Calculations ............................................................................ 5‐1 5.1.1 Overall Station Platform Capacity Analysis ....................................................... 5-1 5.1.2 Localized Station Platform Capacity Analysis ................................................... 5-2 5.2 Platform‐Concourse Vertical Circulation Capacity and Queuing Calculations ................ 5‐2 5.3 Concourse Capacity Calculations ..................................................................................... 5‐3 5.4 Concourse‐Entrance Vertical Circulation Capacity and Queuing Calculations ................ 5‐5 6.0 RESULTS OF ANALYSIS .......................................................................................................... 6‐1 6.1 Station Platform Capacity Results .................................................................................... 6‐1 6.1.1 Overall Station Platform Capacity Analysis ....................................................... 6-1 6.1.2 Localized Station Platform Capacity Analysis ................................................... 6-1 6.2 Platform and Concourse Vertical Circulation Capacity and Queuing Results .................. 6‐1 6.3 Concourse Capacity Results ............................................................................................. 6‐1 6.4 Concourse‐Entrance Vertical Circulation Capacity and Queuing Results ........................ 6‐6 List of Figures Figure 3‐1: 2035 Peak Hours On’s and Off’s – Century City Santa Monica Station and Century City Constellation Station ........................................................................................................ 3‐2 Figure 4‐1: Wilshire/La Brea Station Platform ........................................................................................... 4‐4 Figure 4‐2: Wilshire/Fairfax Station Platform ............................................................................................ 4‐5 Figure 4‐3: Wilshire/La Cienega Station Platform ...................................................................................... 4‐6 Figure 4‐4: Westwood/UCLA Station Platform .......................................................................................... 4‐7 Figure 5‐1: Century City Constellation Station Concourse ........................................................................ 5‐4 WESTSIDE SUBWAY EXTENSION PROJECT February 8, 2012 Page i Station Capacity and Circulation Report (Final) Table of Contents List of Tables Table 3‐1: 2035 Peak Hour On’s and Off’s for Station Capacity Analysis .................................................. 3‐3 Table 6‐1: Station Platform Capacity ......................................................................................................... 6‐3 Table 6‐2: Platform‐Concourse Vertical Circulation Capacity and Queuing .............................................. 6‐4 Table 6‐3: Entrance/Concourse Vertical Circulation and Fare Gate Capacity ........................................... 6‐5 Table 6‐4: Concourse‐Entrance Vertical Circulation Capacity and Queuing .............................................. 6‐7 List of Appendices APPENDIX A SUPPLEMENTAL LOCALIZED PLATFORM CAPACITY ANALYSIS AT THREE STATIONS .... A‐1 WESTSIDE SUBWAY EXTENSION PROJECT February 8, 2012 Page ii Station Capacity and Circulation Report (Final) 1.0 – Introduction 1.0 INTRODUCTION The Los Angeles County Metropolitan Transportation Authority (Metro) is preparing an Environmental Impact Statement (EIS)/Environmental Impact Report (EIR) for the Westside Subway Extension project (the Project). Phase 1 of the Project consisted of the Alternatives Analysis (AA) Study, including conceptual engineering. Phase 2 consisted of the preparation of the Draft EIS/EIR and Advanced Conceptual Engineering (ACE), leading to the selection of a Locally Preferred Alternative (LPA) with several options to study in the third phase. Phase 3 consists of the preparation of the Final EIS/EIR, additional ACE, and the start of Preliminary Engineering (PE) for the LPA. The LPA included seven stations with two station site options each at Century City, Westwood/UCLA, and Westwood/VA Hospital. During the ACE design, studies provided recommendations for modifications to the station selection at the Westwood/UCLA and Westwood/VA Hospital sites. At Westwood/UCLA, permitting of a new building made the off‐street station option infeasible. At Westwood/VA Hospital, discussions with the stakeholders led to the southern alignment being advanced for the ACE submittal. The ACE submittal, issued on April 29, 2011, included drawings for seven station locations plus the single remaining alternative location for the Century City Station, as indicated below: Wilshire/La Brea Wilshire/ Fairfax Wilshire/La Cienega Wilshire/Rodeo Century City Constellation Station (plus Century City Santa Monica option) Westwood/UCLA Westwood/VA Hospital The remaining eight station designs will progress during PE, which was authorized by FTA on January 4, 2011, and by Metro on January 14, 2011. WESTSIDE SUBWAY EXTENSION PROJECT February 8, 2012 Page 1‐1 Station Capacity and Circulation Report (Final) 2.0 – Contract Requirements 2.0 CONTRACT REQUIREMENTS Task 6.3.2 (Station Programs, Concepts, and Locations) of the Technical Scope of Services for the ACE and PE phases requires development and submittal of two reports dealing with station capacity: a station exiting report per NFPA 130, and a station capacity and circulation report. The exiting report deals with emergency conditions, and the station capacity report deals with normal operating conditions. This deliverable addresses the second requirement; the first report is being submitted under separate cover. The Technical Scope of Services does not contain a great deal of detail regarding the station capacity and circulation report. The Task 6.3.2 writeup says, “Indicate the projected passenger loadings to be accommodated in terms of ‘off’s’ and ‘on’s’ by peak and base period….” Task 5.1 (Project Basis of Design) provides additional guidance, indicating that station capacity shall consider “station circulation [and] minimum level of service” and that “TCRP 100 Transit Capacity and Quality of Service Manual may be used as a reference.” This draft report has been prepared in response to these requirements. WESTSIDE SUBWAY EXTENSION PROJECT February 8, 2012 Page 2‐1 Station Capacity and Circulation Report (Final) 3.0 – Ridership Forecasts 3.0 RIDERSHIP FORECASTS Two ridership forecasts for design year 2035 were provided to the PE design team by Parsons Brinckerhoff planning staff on June 1, 2011. Both versions are based on the Westwood/UCLA Station and the Westwood/VA Hospital Station, which correspond to the station sites on which the ACE drawing submittal (multiple Task 5 and 6 deliverables, submitted April 29, 2011) was based. The ACE submittal included drawings for the Century City Constellation Station, but also included drawings for the alternative Century City Santa Monica Station. The two ridership forecasts reflect the two Century City station site alternatives. Figure 3‐1 shows both ridership forecasts graphically in the form of “diamond diagrams.” Table 3‐1 shows peak‐hour on’s and off’s at each station on the Project in design year 2035. For each station, it uses the larger of the eastbound and westbound on’s and off’s contained in the two ridership forecasts. So, for example, for Wilshire/La Brea Station, the eastbound on’s, eastbound off’s, and westbound on’s come from the ridership forecast that includes the Century City Constellation Station. The westbound off’s come from the forecast that includes the Century City Santa Monica Station. Though the numbers do not differ greatly, this approach is slightly more conservative. The design team felt it was more appropriate to use this approach as the basis of the station capacity calculations so that station capacity could be verified no matter which of the two Century City station site
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