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Technical Report Documentation Page
1. Report No.
FHWA-HOP-06-012
2. Government Accession No.
3. Recipient’s Catalog No.
5. Report Date
July 2004
4. Title and Subtitle
Next Generation Simulation (NGSIM) Data Format Plan
6. Performing Organization Code
7. Author(s)
Vijay Kovvali, Richard Margiotta, Robert Hranac, Vassili
Alexiadis
8. Performing Organization Report No.
10. Work Unit No.
9. Performing Organization Name and Address
CAMBRIDGE SYSTEMATIC, INC.
150 CAMBRIDGE PARK DRIVE, SUITE 4000
CAMBRIDGE, MA 02140
11. Contract or Grant No.
DTFH61-02-C-00036
13. Type of Report and Period Covered
Final Report
July 2003 – July 2004
12. Sponsoring Agency Name and Address
Department of Transportation
Federal Highway Administration
Office of Acquisition Management
400 Seventh Street SW, RM 4410
Washington, DC 20590
14. Sponsoring Agency Code
15. Supplementary Notes
FHWA COTR: John Halkias, Office of Operations, and James Colyar, Office of Operations R&D
16. Abstract
The Next Generation Simulation Program (NGSIM) Data Format Plan was developed to define the
structure, documentation, and transfer requirements for data that will be collected for estimation,
calibration, and validation of core behavioral algorithms. The development of the Data Format Plan is
based on existing formats that are relevant to NGSIM and augmented to fill in gaps. To this end, a review
of existing data formats was undertaken and their relevance to NGSIM was assessed. The review included
data standards developed for intelligent transportation systems (ITS), data formats developed specifically
for traffic simulation models, and data formats developed for broader transportation applications. The
specified data formats were developed with the objective of promoting efficient research by maintaining
consistency between data collection and research, and providing consistent storage and transmittal
protocols. On the other hand, this plan intentionally avoids over specification of data formats, so as to
minimize unnecessary limitations to research. This document specifies the conceptual data model by means
of Unified Modeling Language (UML) class diagrams; the data dictionary in the data standard prescribed by
P1489-1999 format developed by the Institute of Electrical and Electronics Engineers (IEEE); the data
exchange structure for data transfer from user to user or from the database/repository to users; and the
NGSIM metadata.
17. Key Words
Next generation simulation, NGSIM, traffic
simulation, high-level plan, traffic data collection,
vehicle trajectory data.
18. Distribution Statement
No restrictions. This document is available to the
public through the National Technical Information
Service, Springfield, VA 22161.
19. Security Classif. (of this report)
Unclassified
20. Security Classif. (of this page)
Unclassified
21. No of Pages
22. Price
Form DOT F 1700.7 (8-72) Reproduction of completed pages authorized
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