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From: Dan_Bower%RPI-MTS.Mailnet@MIT-MULTICS.ARPA
Newsgroups: net.railroad
Subject: position light signals
Message-ID: <1979@brl-tgr.ARPA>
Date: Sat, 25-Jan-86 19:46:58 EST
Article-I.D.: brl-tgr.1979
Posted: Sat Jan 25 19:46:58 1986
Date-Received: Thu, 6-Feb-86 06:38:08 EST
Sender: news@brl-tgr.ARPA
Lines: 4

Also, the B&O has color position light signals - same arrangement as the
PRR's but no center light, and red, amber and green lenses.  Also, the
Pennsy converted most position light signals to amber lenses - at least
I've not seen any lunar white lenses lately.