Not so much from the 1970’s as from the late 1990’s - mid 2000’s. I remember seeing new dual-unit marked signs being installed until the mid-2000’s, as CalTrans and NYDOT were still metricating.
> On Apr 07, 2015, at 14:16 , Carleton MacDonald <carlet...@comcast.net> wrote: > > Sign from the late 1970s, no doubt. In that dry climate it has held up well. > > Carleton > > From: owner-u...@colostate.edu <mailto:owner-u...@colostate.edu> > [mailto:owner-u...@colostate.edu <mailto:owner-u...@colostate.edu>] On Behalf > Of Parker Willey Jr. > Sent: Tuesday, April 07, 2015 01:47 > To: U.S. Metric Association > Subject: [USMA:54683] dual sign CA Highway 395 > > I am going north on US 395 about 20 km north of Victorville. I saw a sign > perhaps about 500 meters to 1 km north of Shadow Mountain Road. I didn't > have time to get out my camera as I went by, so this was from Google Street > View. > > <image001.png> > > > ...Parker
