Research　about　vehicle　recognition　and　adaptive　cruise　control　is　emerging　recently,　using　various　sensory　resources.　There　are　many　sensors　like　cameras,　GPS,　accelerometers,　radars　etc.,　which　are　used　for　detecting　edges　of　the　road,　traffic　signs,　cars　or　pedestrians.　There　are　many　different　sensors　to　access　the　objects＇　data　information.　This　paper　presents　defining　the　width　of　the　road　and　cars.　To　accomplish　this　task　the　multilayer　LIDAR　(Light,　Detection　and　Ranging)　sensor　is　used.　All　data　is　graphically　represented　in　two-dimensional　space.　In　this　paper　such　methods　like　k-mean　clustering,　canny　edge　detection,　Hough　method,　Theil-Sen　estimator　are　using.　The　process　is　conducted　in　MATLAB　environment.