[PRCo] Re: Trolleys

[Fred Schneider]

We can go one step farther and also remind or tell the younger ones that colored
lights were also often used to tell interlocking tower operators (block operators)
the route of the approaching train.  They are easier to read in a subway tunnel
than a destination sign.

Donald Galt wrote:

> On 7 Mar 2005 at 17:39, Harold G. wrote:
>
> > Moscow may have coped New Yprk subways.  The IRT
> > had colored lanterns on the front roof.  Much of Moscow
> > duplicated New York/  Harold Geissenheimer
>
> Perhaps, but coloured light codes for night-time route identification was a
> practice followed by tramways all over the world, from well before the era of
> the first  IRT subway. As was, come to think of it, some sort of colour coding
> for daytime ID, which followed naturally from elaborately painting the route
> and destination on omnibuses.
>
> Don