Intelligent traffic cameras which can detect jams as they build up are set to improve the way Transport for London (TfL) tackles congestion in the capital.

Twenty cameras fitted with special image-recognition technology have been put at traffic hot spots across London. They are able to automatically spot and alert TfL’s traffic control centre if congestion builds up.

Receiving alerts from the cameras allows operators to focus efforts on dealing with congestion rather than having to trawl through all traffic cameras looking for jams.