Eight intersections in Pleasanton, California, have been outfitted with new radar devices that can differentiate bicycle traffic from vehicle traffic and change traffic signals accordingly.
The system, known as Intersector and pictured here, uses a combination of microwave and pressure sensors to tell if a vechile is a car or a bike, and is impervious to inclimate weather. Plus it can be installed without digging up the pavement.
Most current sensors detect metal, and are unable to sense the presence of a lightweight bicycles.
If the system—which costs $4,000 to $5,000 per intersection—proves successful, the city plans to expand it to other intersections.