ACOUSTIC DETECTION OF VEHICLE AXLES

This paper presents the results of work Planning Systems Inc. performed in fulfillment of the requirements of a Small Business Innovative Research (SBIR) Phase I feasibility study. The feasibility of developing an acoustic sensing technique to replace the current electro-mechanical (loop detector, tape switch, pneumatic tube) based methods of collecting vehicle axle passages was investigated. The authors exploit the fact that the dominant source of road noise is the broadband acoustic energy radiated by vehicle tires by cross-correlating the outputs of spatially separated roadside microphones. The results demonstrate the feasibility of detecting vehicle axle passages by the cross-correlation processing of radiated tire noise. The technique is based on technology developed as a consequence of their work in underwater acoustic signal processing.

• Supplemental Notes:
  • Full conference proceedings available only on CD.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Forren, J F
  • Jaarsma, D
• Conference:
  • Intelligent Transportation: Realizing the Future. Abstracts of the Third World Congress on Intelligent Transport Systems
  • Location: Orlando, Florida
  • Date: 1996-10-14 to 1996-10-18
• Publication Date: 1996

Language

• English

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Acoustic detectors; Acoustic signal processing; Axles; Broadband; Cross correlation; Motor vehicles; Sensors; Tire/pavement noise; Tires; Traffic counts
• Uncontrolled Terms: Axle counting
• Old TRIS Terms: Acoustic detection; Acoustic signals
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; Vehicles and Equipment; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00738779
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 29 1997 12:00AM