![]() ![]() Overpass is an open-source replacement for Interstate commissioned by Red Hat. Tobias Frere-Jones designed the typeface Interstate, based on the FHWA series, during the 1990s. The Federal Highway Administration makes no recommendation or endorsement of the Clearview typeface with the reinstatement of their 2004 interim approval. This bill passed as part of the Consolidated Appropriations Act, 2018. On June 7, 2016, a bill challenging this decision was introduced in the United States House of Representatives, which would have ordered the FHWA to reinstate the interim approval for Clearview. However, the FHWA announced in 2016 that it was rescinding its 2004 interim approval of Clearview in the United States while existing Clearview signs could stay up, new signs would have to go back to using Highway Gothic. There was an expectation that over the next few decades, the new Clearview typeface, also specifically developed for use on traffic signs, would replace the FHWA series on some new signage. In 2004, the FHWA published lowercase letters for all of the typefaces and made changes to the Manual on Uniform Traffic Control Devices, which allows their use. Series "A" has been officially discontinued in the United States due to poor legibility at high speeds, though it continues to be specified for certain signs in New Zealand. ![]() The lowercase letters, paired with Series E Modified, later became the basis of a national standard for mixed-case legend on freeway guide signs with the 1958 publication of the American Association of State Highway and Transportation Officials (AASHTO) signing and marking manual for Interstate Highways. Between 19, as part of a research program into freeway signing carried out by the California Department of Transportation (Caltrans), Series E Modified was developed from Series E by thickening the stroke width to accommodate button reflectors for ground-mounted signs, while a lowercase alphabet was developed to allow mixed-case legend (consisting initially of Series D and lowercase letters) to be used on externally illuminated overhead signs. Draft versions of these typefaces were used in 1942 for signs on the Pentagon road network. The 2000 specifications differ from earlier versions in the shapes of a few letters and in the inclusion of lowercase letters for all alphabet series.įHWA Series A through F were developed by the Public Roads Administration (which later became FHWA) during World War II. Changes to the specifications were published in 1966, 1977, and 2000. ![]() The typefaces are officially defined by the FHWA's Standard Alphabets for Traffic-Control Devices, originally published in 1948 (reprinted 1952). The typeface originally included only uppercase letters, with the exception of "E(M)", which was used on large expressway and freeway guide signs. The typeface consists of six fonts: "A" (the narrowest), "B", "C", "D", "E", "E(M)" (a modified version of "E" with wider strokes), and "F" (the widest). However, on signage the official FHWA Series punctuation is based on a circular shape. ![]() Computer typeface versions known as Highway Gothic or Interstate (a separate typeface), which are for sale to the general public, include punctuation marks based on a rectangular shape. The typefaces were developed to maximize legibility at a distance and at high speed. Variants, minor and major (but not the exact US typeface) are used in countries like Turkey, Mexico, Australia (AS1744 fonts), Spain, the Netherlands, Brazil, New Zealand, Macau (written in Portuguese), and some signs in countries like India and Saudi Arabia, when written in English. Highway Gothic (formally known as the FHWA Series fonts or the Standard Alphabets for Highway Signs) is a sans-serif typeface developed by the United States Federal Highway Administration (FHWA) and used for road signage in the Americas, including the U.S., Canada, and Latin American countries, as well as in Asian countries influenced by American signage practices, including the Philippines, China, Taiwan, Malaysia, Indonesia and Thailand. ![]()
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