Ongoing WorkIntegration of newest BPM version into interfaceInclusion of transit portions of modelDevelopment of newer more accurate NYCTA transit networksDevelopment of better methods of access/egress/transfer linksDevelopment of better transit assignment (e.g. Interactive ReportsLink reports of flows, congestion, speeds, etc.TAZ/Demographic reportsNetwork reports (Origin-to-destination paths and travel time diagrams)ĭynamic Web ApplicationProvide Key Input Data and Model Output to the PublicDatasets and starter maps created by interactive reportsInteractive Queries & ReportsCustom Map graphics
TRANSCAD VULNERABILITY SOFTWARE
Software and Model EnhancementsFaster ProceduresMultithreadingCode OptimizationMinimization of Inputs and OutputsPotential for even more performance enhancements with 64-bit TransCADMore available memoryBetter multithreading with I7 processor and VistaSome processes (i.e.
TRANSCAD VULNERABILITY UPDATE
Model Run Time ComparisonsProcessor: Intel Xeon 4-Core Processor, 3.0GHZ, RAM Memory: 3 GB Hard Drive: ~300GB 10,000 RPM in Raid 0 configurationOS: Windows XP Professional, 32-bitModel:Highway only 3-Loop FeedbackTransCAD 4.5:Current BPM Model run times (on a slower machine)TransCAD 4.8:Model Run after new GUI interface and model update to TransCAD version 4.8TransCAD 5.0:Model run after new flowchart GUI interface, update to TransCAD version 5.0, and softwareand model performance enhancements,before Distributed ProcessingDistributed Assignments saves ~ 1-1.5 extra hours roads where urban accidents are concentrated, paying special attention to those involving the most vulnerable users, such as pedestrians and cyclists. Improving Usability and ApplicabilityLessen hardware requirements for some usersCreate a full-featured User InterfaceScenario and File ManagementAutomated Reporting and Output ManagerCreate a superfast version for productionįlowChart GUIEasy to View Model StreamEasy to UseEasy to Create new Scenarios Improve Usability and ApplicabilityMove to the Latest Versions of Model Software (TransCAD)Exploit Features of New Model Software ProceduresStreamline and Optimize Model CodeNew Graphic User InterfacesAdapt to Multiple Hardware EnvironmentsMulti-threading and Distributed ProcessingPublic, Web-Access to Model OutputsīackgroundBPM is implemented in C programs, GISDK script, other software, and TransCAD modeling softwareBPM requires 2 CPUs and 3-4 gigabytes of RAMBPM is deployed on a dated version of TransCAD (4.5, updated to 4.8)BPM has long running timesPrevious experiments and new developments suggest massive speedups are possible. TransCAD - The first and only GIS designed. In both URT networks, a few highly vulnerable segments were observed.
TRB Applications Conference, May 18, 2009 QGIS - A GIS software that is gaining market share and is used by the RPC. Based on large-scale human mobility data collected in San Francisco and Boston, the morning peak urban rail transit (URT) ODs (origin-destination matrix) were estimated and the most vulnerable URT segments, those capable of causing the largest service interruptions, were identified. Jim Lam, Andres Rabinowicz, Srini Sundaram, Caliper Kuo-Ann Chiao, Mohammad Rashid, Ali Mosheni, NYMTCBob Donnelly, Surabhi Gupta, PB Development of the Graphical User Interface and Improvement and Streamlining of NYMTC's Best Practice Model