Next Generation Simulation Core Algorithms and Data Sets presented by Vassili Alexiadis Cambridge Systematics, Inc. January 2003 DTFH61-02-R-00036

The NGSIM Program  Goals: Improve the quality and performance of simulation toolsImprove the quality and performance of simulation tools Promote the use of simulation for research and applicationsPromote the use of simulation for research and applications Achieve wider acceptance of validated simulation resultsAchieve wider acceptance of validated simulation results  Objectives: Develop a core of useful and open behavioral algorithms with supporting documentation and validation dataDevelop a core of useful and open behavioral algorithms with supporting documentation and validation data Influence and stimulate the commercial modeling marketInfluence and stimulate the commercial modeling market Foster an environment of public-private coordinationFoster an environment of public-private coordination  Products: Validated algorithms and data sets in a standard NGSIM format, code and documentationValidated algorithms and data sets in a standard NGSIM format, code and documentation

NGSIM Program Strategies  Stakeholder interaction and involvement Model Users, Traffic Modelers, Software Developers GroupsModel Users, Traffic Modelers, Software Developers Groups  Incremental product development Deliver algorithms & data sets as they become availableDeliver algorithms & data sets as they become available  Use of open processes Products will be openly distributed and made freely available to the broad transportation communityProducts will be openly distributed and made freely available to the broad transportation community  Impact assessment Monitor market reactionMonitor market reaction

Project Organization Quality Assurance/ Quality Control Lance Neumann (CS) Moshe Ben-Akiva (MIT) Alexander Skabardonis (UCB) Hani Mahmassani (UMD) Pitu Mirchandani (UAZ) Panos Michalopoulos (UMN) Senior Advisors Core Algorithms Larry Head (SGTS) Web Site Nathan Clark (CS) Validation Richard Dowling (DA) Data Sets Richard Margiotta (CS) Project Management Vassili Alexiadis (CS) Data Formats Richard Margiotta (CS) Stakeholders Vassili Alexiadis (CS) Federal Highway Administration Cambridge Systematics, Inc. Vassili Alexiadis (CS) Principal Investigator Gene McHale John Halkias Mitretek

High-Level Plan for Validation High-Level Plan for Data Sets Identify and Prioritize Core Algorithm Categories Establish NGSIM Data Formats Establish and Maintain Web Site and Repository Interaction with the Stakeholder Group and User Community Project Management and Program Support High-Level Plan and Assessment for Core Algorithms Prioritized Core Algorithms Data Formats Algorithm Software and Documentation Algorithm Software and Documentation Validation Databases and Procedures Validation Databases and Procedures Validation Data Validation Data Data Requirements Algorithm Development, Validation, and Data Collection Project Approach

Web Site – Objectives and Contents  Objectives: Design, implement, and maintain a user-friendly web site as a repository for NGSIM informationDesign, implement, and maintain a user-friendly web site as a repository for NGSIM information Facilitate collaboration among the communityFacilitate collaboration among the community  Contents Repository for algorithms, data sets, data formats, software, validation results and documentationRepository for algorithms, data sets, data formats, software, validation results and documentation Papers and articles related to NGSIMPapers and articles related to NGSIM Links to relevant web sitesLinks to relevant web sites Contact information for people involved in the projectContact information for people involved in the project

Stakeholder Groups  Objectives: Foster strengthened coordination and partnerships between the FHWA and stakeholdersFoster strengthened coordination and partnerships between the FHWA and stakeholders Heighten awareness, understanding, and adoption of traffic simulation concepts and strategies among key decision- makersHeighten awareness, understanding, and adoption of traffic simulation concepts and strategies among key decision- makers  Establish three stakeholder groups Membership of 15 members in each group, with cross- representationMembership of 15 members in each group, with cross- representation FriendsFriends  Meet once a year, and correspond electronically more frequently using e ‑ mail and the web site

Stakeholder Groups  Model Users Group – Chair: Dr. George List Focus on the needs and requirements of end-usersFocus on the needs and requirements of end-users Representatives from state and local transportation agencies and consultantsRepresentatives from state and local transportation agencies and consultants  Traffic Modelers Group – Chair: Dr. Dolf May Focus on the selection, development, and validation of core algorithmsFocus on the selection, development, and validation of core algorithms Representatives with demonstrated expertise in the area of traffic modelingRepresentatives with demonstrated expertise in the area of traffic modeling  Software Developers Group – Chair: Dr. Charlie Wallace Help ensure that developed products have the maximum likelihood of being incorporated into commercial productsHelp ensure that developed products have the maximum likelihood of being incorporated into commercial products Developers and distributors of traffic simulation softwareDevelopers and distributors of traffic simulation software

2002 SepOctNovDecJanFebMarAprMay Task A.Project Management and Program Support B.Interaction with Stakeholder Groups and User Community C.Establish and Maintain Web Site and Repository D.Identification and Prioritization of Core Algorithm Categories E.1High-Level Plan and Assessment for Core Algorithms E.2High-Level Plan for Validation E.3High-Level Plan for Data Sets F.Establish NGSIM Data Formats G.Algorithm Development, Validation, and Data Collection Project Schedule - Base Period JunJulAugSepOctNovDecJanFebMarAprMayJunJulAug Kickoff Meeting. Project Meetings. Stakeholder Group Annual Meeting. S Meetings S 1 Prototype Web Site. 3 Web Site Software. Web Site Contents. 4 5 Draft Prioritized Core Algorithm Categories. 6 Revised Prioritized Core Algorithm Categories. 7 8 Draft High-Level Plan for Algorithm Selection Criteria. Revised High-Level Plan for Algorithm Selection Criteria 9 Draft Assessment Report for Core Algorithms. Revised Assessment Report for Core Algorithms Draft and Final Web Site/ Repository Design Plan. 2 Draft High-Level Plan for Validation. Revised High-Level Plan for Validation. Draft High-Level Plan for Data Sets. Revised High-Level Plan for Data Sets Draft Data Format Document. Revised Data Format Document S

Next Steps  Develop core algorithm categories  Develop prioritization criteria and methodology  Discuss with Stakeholders at March meeting  Develop draft high-level plans and assessment for core algorithms, validation and data sets  Develop data formats  Website