[PRCo] Nachod Signals

[Bob Dietrich]

I remember not too long ago a discussion of signaling on this list; at least
I think it was this list.  Anyway, the current issue of Trolley Talk -
#283,September-October 2006 - has a very good explanation of the Nachod
system with references to a couple other systems as well.  If you are like
me, ignorant of such topics, this is an informative article.

Bob