Designed to replace the Clarendon road guide sign typeface that the U.S. National Park Service used as part of their identity. NPS Roadway was tested by Pennsylvania Transportation Institute and was found to decrease legend length by 10-15% while increasing readability by 11%. Part of a total redesign of the Park Service identity (that included the Rawlinson series of fonts) the font has been approved by FHWA (Federal Highway Administration) for use on all Federal roads.