1. A system for periodic lane marker identification comprising: at least one imager configured to capture a plurality of images exterior of the vehicle; a processor in communication with the at least one imager where the processor is configured to process at least one image such that the period of the dashed lane markers in the image is calculated for tracking the vehicle within the detected dashed lane markers; and wherein the processor communicates an output based upon the detected dashed lane markers for use by the vehicle.