EVALUATION OF TRAFFIC PARAMETERS FROM REAL TRAJECTORIES BY USE OF PCA

This paper shows how principal components analysis (PCA) can be used to analyze a large set of real trajectories of vehicles on a bend. PCA gives an opportunity to reduce the mathematical and numerical operations necessary to extract real values of traffic parameters, such as curvature, centrifugal acceleration, and the rate of change of this acceleration, from the set of trajectories. In addition, profiles of these parameters can be obtained. Applied to an exemplary set of real trajectories, PCA found that maximum curvature and rate of change of centrifugal acceleration are square functions of vehicle velocity, and maximum acceleration is its linear function.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8674831
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • KEMPA, J
  • Siuda, R
• Publication Date: 2000-7

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 350-356
• Serial:
  • Journal of Transportation Engineering
  • Volume: 126
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-947X
  • Serial URL: https://ascelibrary.org/journal/jtepbs

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Curvature; Highway curves; Multivariate analysis; Traffic; Vehicle trajectories; Vehicles; Velocity
• Uncontrolled Terms: Principal components analysis
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Vehicles and Equipment; I71: Traffic Theory;

Filing Info

• Accession Number: 00795655
• Record Type: Publication
• Contract Numbers: DMS-9313013, DMS-9208758, PolyU 5043/99E
• Files: TRIS, ATRI
• Created Date: Jul 15 2000 12:00AM