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FHWA Next Generation Simulation (NGSIM) Program

Explore how NGSIM program aims to improve simulation tools, data collection, algorithm development, & stakeholder engagement for better transportation decisions.

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FHWA Next Generation Simulation (NGSIM) Program

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  1. FHWA Next Generation Simulation (NGSIM) Program • 2007 TRB Planning Applications Conference • Daytona, FL • May 7, 2007 • James Colyar, P.E. • Highway Research Engineer • Federal Highway Administration

  2. FHWA Role in Operations Traffic Analysis • Assessed user needs and current simulation market: • Viable market in traffic simulation packages • Still gaps in functionality that require algorithm development • Users not sure how valid the models are, or how they compute their results – “black box” • FHWA decision: • Maintain a strong presence and role in traffic simulation • Do not compete with private sector software development market; instead act as market facilitator • Provide open, freely distributed products to benefit entire traffic community – users, developers, researchers

  3. NGSIM Goals • Improve the quality, trust, and use of simulation tools • Foster an environment of public-private cooperation • Influence and stimulate the commercial modeling market • Improve transportation decision-making

  4. NGSIM End Products • Develop a core of microscopic driver behavior algorithms • Core model algorithms, not GUI or data processing/tools • Open source for free public use • Supporting documentation and validation data • Collect high quality data sets to support algorithm development • Open source for free public use • Supporting documentation and validation data

  5. Direct NGSIM Activities Public-Private Partnership Better Models Enable Better Decisions NGSIM Pathway to Success Data Collection Algorithm Development Impact on Commercial Simulation Market Better Transportation Investment Decisions

  6. NGSIM Stakeholder Groups • Traffic Modelers • Represent researchers and others that develop theoretical models • Software Developers • Represent private vendors responsible for development of commercial software • Model Users • Represent end users of simulation tools (i.e., state DOTs, local agencies, consultants) • Roughly 15 members in each group, with a diversity in backgrounds and geographic locations (strong international participation)

  7. Role of NGSIM Stakeholders • Identify research needs based on current tool deficiencies • Help shape the program plan and high-level blueprint documents • Serve on Expert Panels for individual algorithm research efforts • Specific roles • Modelers – Participate in developing new driver behavior algorithms • Developers – Validate and incorporate new algorithms • Users – Use improved simulation models

  8. Engaging Stakeholder Participation • NGSIM Stakeholder meetings at TRB Annual Meeting • Periodic additional Stakeholder meetings, webinars, and teleconferences • Regular Expert Panel teleconferences for each algorithm development effort • Web Discussion Forum on NGSIM website • All NGSIM products are openly available on NGSIM website – 630 downloads of Freeway Lane Selection algorithm as of March 2007

  9. NGSIM Core Functions Identify Research Needs F M R Manage Assets Facilitation NGSIM Community Components Constraints Funding Organizational Outputs Inputs NGSIM Website Tool Shortcomings Core Algorithms Candidate Algorithms Datasets Candidate Datasets Research Needs NGSIM Tools NGSIM Community Members Resources

  10. F R M NGSIM Community Components (cont.) Organizational Funding Constraints FHWA Direction FHWA NGSIM Outputs Inputs NGSIM Website Tool Shortcomings Core Algorithms FHWA/Contractor Candidate Algorithms Datasets Candidate Datasets Research Needs Algorithm Development Dataset Collection (FHWA NGSIM Funded) NGSIM Tools NGSIM Community Members Resources

  11. Keys to NGSIM Community • Define the roles and responsibilities for core functions (identifying needs, managing assets, facilitation) • Maintain frequent and open communication, including deliverables • Determine an incentive for all community members • Find “win-win” situations • Provide a “neutral” playing field

  12. Web Site – http://ngsim.fhwa.dot.gov • Using the site: • Register, via the front page • View the ‘documents’ section for relevant downloads • Check the site weekly for news and events updates • Participate in discussion forum

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