(https://www.aaroads.com/forum/proxy.php?request=http%3A%2F%2Ffarm3.static.flickr.com%2F2685%2F4394145904_03a4dc2866.jpg&hash=dd7e065a3e52f43b559b3dc983abc9e1a3b1859b)
the YIELD sign was introduced in 1950, with extra RIGHT OF WAY subtext, but on a trapezoidal (not triangular) base. Most states started making these signs in the round font, but some (Vermont) made them using the old block-font dies, which has been deemed obsolete in 1948.
this sign, being of the triangular kind (as opposed to trapezoidal) is likely newer than 1954, which is the oldest I have ever seen an MUTCD supplement with a triangular sign. It is certainly newer than the YIELD signs that do not say 'RIGHT OF WAY', which I have seen only as old as 1961.
so, I say, between 1954 and 1961, and possibly a year or two older.
(and btw, the red yield sign came into being in 1966 - I have seen it in a Penna MUTCD from that year; it was adopted as a federal standard in 1970.)
What did they do for situations that would today require a yield sign before 1950? Leave it unsigned?
usually they put up a full stop.
Quote from: agentsteel53 on February 28, 2010, 01:17:49 AM
(and btw, the red yield sign came into being in 1966 - I have seen it in a Penna MUTCD from that year; it was adopted as a federal standard in 1970.)
Interesting, I didn't know that these originated in my home state.
That is certainly a lot better contribution to the motoring public than Clearview!
Quote from: agentsteel53 on February 28, 2010, 01:17:49 AM
the YIELD sign was introduced in 1950, with extra RIGHT OF WAY subtext, but on a trapezoidal (not triangular) base.
I just saw one last week that I think you are describing. I just have to get down that way (about an hour south of my place) with camera, and get a shot of it. Unfortunately, my travels have ceased to take me through there as of last week. I may not get down there for another month.
I knew it was a rather odd-looking sign for a "yield". But then again, I was on a few of this county's backroads a couple of years ago and they were still placing BRAND NEW YELLOW Yield signs at a few of their intersections.
Will post them as soon as I can get down there.