Traffic Data Collection

Traffic data collected from roadside sensors provides real-time and historical information for traffic management, traveler information, and planning systems. Currently, traffic data collected using vehicle probes is accomplished using toll tags, GPS, license plate recognition, and cellular phone networks. These systems can be expensive, difficult to install and maintain, and provide a limited amount of data for the roadway network depending on the type of system being used.

Anonymous Wireless Address Matching Concept

The Texas Transportation Institute (TTI) is currently researching and developing an innovative, cost effective approach for collecting and processing traffic data using anonymous wireless network addresses as probes. The system currently uses anonymous addresses from Bluetooth network devices to identify probes and calculate travel times and speeds on instrumented roadway segments.

Benefits of Anonymous Wireless Address Matching

  • Low cost, standards-based, non-proprietary equipment and protocols.
  • Easy, non-intrusive field installation and maintenance.
  • Large penetration of probe devices