Next Generation Simulation (NGSIM) Overview

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Transcript Next Generation Simulation (NGSIM) Overview

Next Generation Simulation
(NGSIM) Overview
NGSIM Stakeholders Meeting
March 24-25, 2003
John Halkias
FHWA Office of Transportation
Gene McHale FHWA Office of Operations R&D
 FHWA’s Traffic Analysis Tools Program
 Leading to NGSIM
 NGSIM Core Algorithms and Data Sets
 NGSIM Stakeholder Groups
FHWA Traffic Analysis Tools Program
Wider Use / Acceptance
of Tools
More Trusted Results
Types of
 Guidance & training
 Developing new
 Promotion of current
 Support of current
 Improving
foundation of
existing tools
FHWA Recent Activities in Simulation
 Assessing User Needs
 Assessing Current Simulation Market
 Results
• Viable market in traffic simulation packages
• Still gaps in functionality that require algorithm
• Users not sure how valid the models are, or how they
compute their results – “black box”
FHWA’s 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 (data sets &
algorithms) to benefit entire traffic community – users,
vendors, researchers
Benefits of NGSIM
 Fosters commercial market, instead of Federal competition
 Exploits inherent strengths of public & private sectors
 Enhances state-of-the-art in simulation modeling
 Enables users to better understand (& justify) modeling results
NGSIM Strategies
 Stakeholder interaction and involvement
• User, Modeler, Developer Groups
 Incremental product development
• Deliver algorithms & data sets as they become available
 Use of open processes
• Products and activities
 Ongoing impact assessment
• Monitor market reaction
Contract – “NGSIM Core Algorithms and Data
Contract Objective (from RFP):
“… to develop a core of open behavioral algorithms in
support of traffic simulation…
…that describe the interactions of multi-modal
travelers, vehicles and highway systems…
…openly distributed and made freely available to the
broad transportation community.”
Contract Products
 Develop openly distributed:
• Algorithms, validated with real world data
• Data sets, for validating existing tools and core algorithms
• Documentation of algorithms and data sets
How we envision NGSIM affecting market
 Software developers use NGSIM data sets and algorithms to
improve their products
 Academic community conducts focused research in the
development of improved traffic behavioral models
 Simulation model users can choose the most valid tools for
their applications and gain insight into their methodologies
 Community interacts with the program through the NGSIM
repository and website
How we envision NGSIM affecting market
Software Developers
Improved Software
Model Users
NGSIM Website and
Data Sets
Model Developers / Researchers
NGSIM Stakeholders
 Involved from the beginning, involved throughout
 Stakeholder Groups created to act as surrogates for the traffic
simulation market sectors
NGSIM Stakeholder Groups
 Objectives:
• Foster strengthened coordination and partnerships between
the FHWA and stakeholders
• Heighten awareness, understanding, and adoption of traffic
simulation concepts and strategies among key decisionmakers
 Establish three stakeholder groups
• Membership of 15 members in each group
• Friends
 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-users
• Representatives from state and local transportation
agencies and consultants
 Traffic Modelers Group – Chair: Dr. Dolf May
• Focus on the selection, development, and validation of core
• Representatives 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 influencing and improving commercial
• Developers and distributors of traffic simulation software