Overpass is a digital typeface, closely related to the FHWA Series Highway Gothic fonts, a signage alphabet drawn for the United States Federal Highway Administration in 1949. It was commissioned by Red Hat from designer Delve Withrington as a freely usable replacement for Interstate, which is used by Red Hat as its corporate typeface. Red Hat created the family as a freely redistributable alternative, since it does not own all rights to Interstate. It continues to use Interstate, a much larger font family, on printed material.