Event-Driven Self-Sufficient Traffic Jam Detection and Observation System

Modern traffic management systems are designed to perform single measures as well as complex strategies for the overall improvement of traffic flow and minimization of traffic congestion. However, in order to achieve these goals, traffic managers must have accurate information about the actually traffic state. This paper presents a new, self-sufficient system that allows operation with a minimum of communication costs and flexible usage at different acquisition locations. The system is equipped with standardized interfaces for future peripheral equipment. Passive infrared detectors are used to count the vehicles crossing the measurement cross section. They can also measure the speed of the vehicles. Through the use of established cellular phone networks by a GPRS modem, no independent infrastructure is necessary. An SD Card is provided as data storage for the traffic data. This also serves as a fall back if the GPRS connection is temporarily not available. The mobile traffic jam detector has an interface for additional modules, which can, for example, establish a connection to a camera system or to environmental detectors. This interface provides the power supply for additional modules as well as for several communication interfaces. The authors briefly report on the use of this system in a real world test situation. They conclude that these field devices can be used together with other traffic jam detection technologies and environmental detectors in heterogeneous detection networks to help operators of intelligent transportation systems (ITS) generate more reliable forecasts of traffic volume.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Photos; References;
  • Pagination: 8p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01142022
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 12 2009 11:13AM