Congestion charging is a proven method to reduce traffic. IBM – a contractor to Q-Free in several projects – gives some fascinating insight into the Stockholm congestion charging project at Q-Free is proud to deliver tolling technology, including world-leading Automatic Licence Plate Recognition (ALPR), to support reducing congestion in urban areas. Both our Intrada ALPR libraries as well as our Intrada Synergy Server server and cloud-based image review solution are used in this application.