An apparatus and method for correctly determining the position of a vehicle in a traffic lane by obtaining correct information about the position of the traffic lane without being affected by variations in the road surface, weather, time of day, or such imaging conditions as fixed or moving lighting,...http://www.google.es/patents/US20020031242?utm_source=gb-gplus-sharePatente US20020031242 - LOCAL POSITIONING APPARTUS, AND METHOD THEREFOR
Número de solicitud: 09/216,957 Número de publicación: US 2002/0031242 A1 Fecha de presentación: 21 Dic 1998 Patente emitida: US6493458 ( Fecha de emisión 10 Dic 2002)