'Bluetooth' to track travel time for vehicles & pedestrians

Here's an interesting post on how engineers have created a method that uses pervasive Bluetooth signals from mobile phones and other wireless devices to constantly update how long it takes vehicles and pedestrians to travel from one point to another:

The method envisioned by engineers at the Indiana Department of Transportation represents a potentially low-cost leap in technology to provide information for everything from the speed of the morning commute to the sluggishness of airport security lines.

"This is incredibly valuable information that could be used for many purposes, including better traffic signal timing and management of construction work zones to reduce congestion, as well as real-time traffic information for motorists," said Darcy Bullock, a professor of civil engineering at Purdue University. "Now we have a way to measure how slow traffic is on a given stretch of road or how long it's taking people to get through airport security at a given concourse and time of day."

Read post - ''Bluetooth' to track travel time for vehicles & pedestrians'
-