[PRCo] Re: 42/38 on Smithfield Yellow-Green Light

[Fred Schneider]

I didn't know it was universal requirement.   I knew a chap from Pennsylvania who had a license and was color blind.


On Oct 30, 2011, at 8:28 PM, Dwight Long wrote:

> 
> Fred
> 
> How do color blind folks get driving licenses?  Even in Del. a color 
> recognition test must be passed to obtain one.
> 
> In East Palestine, Ohio, in the early 50s there was a two-aspect traffic 
> light which had the green aspect replaced by a moving green neon hand (as in 
> hand of a clock) which revolved toward zero to indicate how much time was 
> left before the red aspect would appear.  Neat idea, but I never saw it 
> anywhere else, and it sure is not there now!
> 
> Dwight
> 
> ----- Original Message ----- 
> From: "Fred Schneider" <fwschneider at comcast.net>
> To: <pittsburgh-railways at dementix.org>
> Sent: Thursday, October 27, 2011 2:30 PM
> Subject: [PRCo] Re: 42/38 on Smithfield Yellow-Green Light
> 
> 
>> It ended when the feds wanted consistency everywhere.   They never managed 
>> to get it everywhere ... Florida and Texas mount traffic lights 
>> horizontally to confuse the color blind.
>> 
>> At the same time New York City scrapped their lights that simply went from 
>> green to red.   Marietta, Ohio used to have green and red lights that 
>> flashed red over green three times as a warning before the green went out. 
>> They also disappeared about the same time.   There were a lot of odd 
>> variants at one time.  Some cities had lights where the green was 
>> sequential .... started at the bottom and progressed up a ladder until it 
>> turned red.   Seems to me Reading, PA had a version like that back in the 
>> 1930s or 1940s but it was not still around in the 1970s.
>> 
>> 
>> 
>> On Oct 27, 2011, at 2:20 PM, Barry, Matthew R wrote:
>> 
>>> No, Bob.  That practice ended in Pittsburgh - I  think in the late 70s.
>>> 
>>> -----Original Message-----
>>> From: pittsburgh-railways-bounce at lists.dementix.org 
>>> [mailto:pittsburgh-railways-bounce at lists.dementix.org] On Behalf Of Bob 
>>> Rathke
>>> Sent: Thursday, October 27, 2011 2:18 PM
>>> To: pittsburgh-railways at dementix.org
>>> Subject: [PRCo] Re: 42/38 on Smithfield Yellow-Green Light
>>> 
>>> 
>>> Don't the traffic lights in Pittsburgh still have the overlapping 
>>> green/yellow indication?
>>> 
>>> 
>>> 
>>> I recall that in the 1960's Pittsburgh was one of the few (maybe the 
>>> only) city in the U.S. with overlapping traffic signals.  Also in that 
>>> era, Canton, Ohio had simple red & green traffic signals - no yellow.
>>> 
>>> 
>>> 
>>> Bob
>>> 
>>> 
>>> 
>>> ----- Original Message -----
>>> 
>>> 
>>> From: "Matthew R Barry" <mrb190 at pitt.edu>
>>> To: pittsburgh-railways at dementix.org
>>> Sent: Thursday, October 27, 2011 12:21:58 PM
>>> Subject: [PRCo] 42/38 on Smithfield  Yellow-Green Light
>>> 
>>> Hi Folks,
>>> Take a look at this of the 42/38 on Smithfield: 
>>> http://www.railpictures.net/viewphoto.php?id=275722&nseq=45
>>> 
>>> Remember when the traffic lights used to give us "green" THEN   "green 
>>> and yellow together," then "yellow," and finally "red?"    The photo 
>>> illustrates the former green/yellow signal.
>>> 
>>> Matt
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>> 
>> 
>> 
> 
>