Siemens Road Sign Reader

This new technology from Siemens looks interesting. It is designed for your car and has a camera built in which reads road signs, processes the image, displays the speed on your screen and tells you if you are over or under the spead limit for that particular road. It makes me wonder if it can detect the good old national speed limit signs here in the UK which can mean either 60 or 70 depending on what type of road you are on