Metric signs on roads in the U.S.
I-24 in Chattanooga
Metric and customary highway sign along I-24 (eastbound) displays the distance to Chattanooga, TN. Two such signs exist in the Chattanooga area. Image provided by Jan Galletta of the Chattanooga Times Free Press, from staff photo by Steve Davis, for an article on the metric system published on 6 September 2003.
I-75 near Cleveland, TN
Metric and customary distance sign on I-75 southbound near Cleveland, TN. Photo by Adam Froehlig in November 1999, from his Web site, Froggie's Highway Photography.
I-75 near Knoxville
Metric and customary distance sign on I-75 southbound near Knoxville. Photo by H.B. Elkins, who says it was installed around the time of the 1982 World's Fair. From his Millennium Highway Web site.