I remember those signals Fred, and I'm 44. If I recall, they were only in the city limits. Oh, nevermind. I was talking about vehicle signals while you were talking about pedestrian signals. Now that I do not remember. -- Fred Schneider wrote: Going back to Marietta, Ohio ... before standardization they used two- color signals. The red flashed three times and then the green went out and the red came on solid. Worked fine. Someone ought to bright this back to Pittsburgh if not for trolleys. Remember the local version of walk / don't walk lights. Green, then green plus amber for don't walk, then amber, then red. Am I showing my age guys? On Mar 10, 2007, at 5:27 PM, robert netzlof wrote: > --- John Swindler wrote: >> >> Likewise, why do we need a yellow signal at an intersection. >> Think of all the money that could be saved with only a two >> aspect signal? > > I seem to recall seeing many such in New York city in the late 1950s. > > Bob Netzlof a/k/a Sweet Old Bob > > > > > ______________________________________________________________________ > ______________ > Get your own web address. > Have a HUGE year through Yahoo! Small Business. > http://smallbusiness.yahoo.com/domains/?p=BESTDEAL >