1. A driver assistance system for a vehicle, said driver assistance system comprising: a camera disposed at a vehicle equipped with said driver assistance system, wherein said camera views forward of the equipped vehicle and wherein said camera is operable to capture image data; a control comprising an image processor; wherein said image processor is operable to process image data captured by said camera; wherein said control, responsive at least in part to image data processing by said image processor, is operable to determine when the equipped vehicle is at least one of (i) approaching a construction zone, (ii) entering a construction zone and (iii) driving along a construction zone; and wherein image data processing by said image processor comprises at least one of (a) traffic sign recognition, (b) character recognition, (c) object detection, (d) object recognition, (e) spectral discrimination, (f) spatial recognition and (g) lane marker detection.