Intelligent Vehicle (IV) is a new research field in many counties, and, vision-based structured road is a important research direction. Structured road detection is mainly depending on the detection of the lanes on the road and to confirm the boundary of the road. The final goal is the autonomous calm, safe drive for intelligent vehicle in any time and without people's help.In this paper, we mainly direct to the characters of structured road, we did some work on how to extract lane information in road image...