[feld]

Bluetooth is not a small minority. It's a huge business, and Trafficcast is one of the leaders in this. Their product is called BlueTOAD. They're signing contracts with governments left and right.

http://trafficcast.com/news/

MADISON, WI October 18, 2010 - TrafficCast announced it has now finalized agreements with nine leading distributors of traffic signal and control equipment, enabling localized sales services and product support in forty-one states plus the District of Columbia for its innovative BlueTOADTM technologies.

MADISON, WI March 1, 2011 - TrafficCast International, Inc. today announced that Econolite Canada, Inc. will distribute its BlueTOADTM line of products, enabling localized sales services and technical support in the ten provinces and three territories of Canada.