These guys, <a href="http://www.mobileye.com/">http://www.mobileye.com/</a>, seem to have made substantial progress;<br><br><i>Mobileye is a pioneer in the development of vision-based Advanced Driver Assistance Systems (ADAS), providing data for applications such as Lane Departure Warning, Forward Collision Warning, Headway Monitoring, Pedestrian Detection, High Beam Assist, Traffic Sign Recognition, Adaptive Cruise Control and more.</i><br>
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