I do like the usage of ClearviewOne Fonts as an alternative to standard U.S. Interstate typeface. I do know of some current usage. The Texas Department of Transportation has used it in some newer signage on Interstate 10 between mile marker 19 and 32 (in El Paso) as well as on some streets. There is a sign in use using ClearviewOne on the eastbound lane indicating the exit to "Copia St./Texas Loop 478" which is immediatley before the exit to north/southbound US 54.