> Travel Time Systems work through the analysis of collected traffic data. This data can be collected via cellular providers, GPS vendors, mobile app vendors and most popularly through Bluetooth and Wi-Fi Scanning. Bluetooth and Wi-Fi scanning technology makes use of non-intrusive roadside sensors to detect the unique addresses of the Bluetooth and Wi-Fi radios inside of driver's vehicle and smartphone. By picking up a unique radio ID at one sensor location and then another these systems are able to calculate the travel time experienced from sensor A to sensor B for that unique vehicle/driver. These systems collect and calculate thousands of data points like this in order to determine the average travel time between any two sensors on the road.
