A US-based firm has unveiled traffic monitoring technology that traces Bluetooth signals that derive travel times, road speeds and vehicle movements.

TrafficCast International’s Bluetooth Travel-time Origination and Destination (BlueTOAD) delivers accurate traffic data to meet the specific needs of Departments of Transportation, traffic engineers and traffic information providers.

BlueTOAD enables granular road speed coverage particularly for areas such as arterials and on-ramps, the company said.

Bluetooth-equipped electronics like mobile phones, car radios, navigation devices and computers emit signals received by BlueTOAD.

The travel time is sampled directly from device movement and can sort through the implications of vehicle movements in congested road segments.

It is expected that by 2013 two out of every three new cars will offer Bluetooth connectivity.