1. An imaging system for a vehicle comprising: a camera having a field of view exterior of a vehicle equipped with said imaging system, wherein said field of view is in a forward direction of travel of the equipped vehicle, and wherein said camera is operable to capture image data; an image processor operable to process said image data; a control, wherein said control, responsive to said image processor, is operable to provide at least (a) an adaptive forward lighting function for at least one forward facing light of the equipped vehicle, (b) a lane departure warning function and (c) a traffic control signage function; and wherein said control provides said traffic control signage function at least in part by recognition of a geometrical organization present in the forward field of view of said camera.