The street centerline data for the City of Edmond was originally produced by field personnel using a GPS road trace for all roads and streets in the City of Edmond in May of 1997. The data collected was then corrected to a positional accuracy of 3-10 feet through the use of an established base station. Road segments were broken at road intersections. The City of Edmond has modified and updated the centerline data using plat drawings and aerial photos. Attributes collected include address information, type of road surface and number of lanes.