1. A vision system for a vehicle, said vision system comprising: a forward facing camera disposed at a windshield of a vehicle equipped with said vision system, said forward facing camera having a forward field of view through the windshield of the equipped vehicle; said forward facing camera comprising an imaging array sensor and a lens; wherein said forward facing camera is operable to capture image data for a plurality of driver assistance systems of the equipped vehicle; an image processor operable to process captured image data; wherein, responsive at least in part to processing by said image processor of captured image data, a lane of a road along which the equipped vehicle is traveling is determined; wherein, responsive at least in part to processing by said image processor of captured image data, an oncoming vehicle approaching the equipped vehicle is detected; wherein said plurality of driver assistance systems of the equipped vehicle comprises a lane departure warning system of the equipped vehicle; wherein said plurality of driver assistance systems comprises at least two other driver assistance systems; wherein, responsive at least in part to processing by said image processor of captured image data, lane markers of the road lane along which the equipped vehicle is traveling are detected; wherein, responsive at least in part to processing by said image processor of captured image data, road curvature information is extracted; wherein, responsive at least in part to processing by said image processor of captured image data, a surface property of the road being travelled by the equipped vehicle is detected; and wherein, responsive at least in part to processing by said image processor of captured image data, a light beam emanating from a headlamp of the equipped vehicle is adjusted in a manner that limits directing beam light towards the eyes of a driver of the detected oncoming vehicle.