NYSDOT on Twitter: "Do you know what type of road you're driving on? The details on route designation signs let you know if it's a county, state, U.S. or interstate route. https://t.co/uql39mHNdQ" /
American interstate and highway signs illustration including highway 101 and interstate 95. | CanStock
California interstate route 405 highway marker road sign Los Angeles 1961 13x11 | eBay
Interstate Sign Vector Art, Icons, and Graphics for Free Download
Figure 2D-3. Route Signs
Figure 2D-3 Long Description - MUTCD 2009 Edition - FHWA