The lowercase-only typeface was designed in 1973 by Tom Hultgren and was among the winners of a competition held by Letraset in 1973.
Digital versions include a badly spaced ITC Traffic (©1992 Corel Corporation) and Traffic by Agfa (1995), which both have disappeared from the market. WSI had an open version. Trafaret (1993) is an expansion with Cyrillic support by Alexey Kustov for TypeMarket. Artistica (Manu Ramos, 2012) and HFF Code Deco (2014) are poor freebie interpretations.