A vision system for a vehicle includes a forward viewing camera. Responsive at least in part to processing by an image processor of image data captured by the forward viewing camera, at least one road characteristic of a road along which the vehicle is traveling is detected. Responsive at least in part to processing by the image processor of image data captured by the forward viewing camera, other vehicles exterior the equipped vehicle are detected. Responsive at least in part to processing by the image processor of image data captured by the forward viewing camera, road curvature of the road along which the vehicle is traveling is determined. Data derived from image data captured by the forward viewing camera may be wirelessly communicated from the vehicle to a remote data receiver located remote from the vehicle.