A new Bluetooth system is being used to improve traffic flows in the city of Aarhus, Denmark. Around the city, ten digital signs show driving times, alternative routes, and weather conditions on the busiest streets. Drivers can then use the information to find alternative routes, while engineers can use the information to calibrate the traffic signals and detect changes in traffic patterns. The system timestamps people's Bluetooth-enabled devices as they drive by sensors and sends the data to a central server for analysis.
For more information about the device and service, read the article here or visit the company website here.