Intelligent Highway Solutions, Inc. announced that it has started the prototype phase of the development of the battery-less/wireless sensor. Recently the company announced it received its patent pending approval for a battery-less wireless sensor that can be embedded in the road and used to measure traffic flow rate, speed and approximate vehicle weight. Compared to existing inductive loop based traffic sensors, the new sensor is expected to provide increased reliability, easy installation and low maintenance costs.

The sensor uses power only for wireless transmission and has zero idle power loss. The sensor is expected to be extremely energy efficient. Energy to power this sensor is harvested entirely from the short duration vibrations that results when an automobile passes over the sensor.