1. An image sensing system for a vehicle, said image sensing system comprising: an imaging sensor; said imaging sensor comprising a two-dimensional array of light sensing photosensor elements formed on a semiconductor substrate; said imaging sensor disposed at an interior portion of the vehicle proximate the windshield of the vehicle; said imaging sensor having a forward field of view to the exterior of the vehicle through an area of the windshield; a logic and control circuit; said logic and control circuit comprising an image processor for processing image data derived from said imaging sensor; said image processing comprising at least one of (i) spatial differentiation, (ii) spectral signature recognition, and (iii) pattern recognition; said logic and control circuit generating at least one control output; and wherein said image sensing system detects lane markers on a road being traveled by the vehicle and present in the field of view of said imaging sensor.