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- Path: sparky!uunet!wupost!gumby!wmichgw!737ochs
- From: 737ochs@gw.wmich.edu
- Newsgroups: rec.railroad
- Subject: Re: flashing signals
- Message-ID: <1992Nov19.011908.6437@gw.wmich.edu>
- Date: 19 Nov 92 01:19:08 EST
- References: <10095@kralizec.zeta.org.au> <1992Nov9.061959.28101@mailhost.ocs.mq.edu.au> <7938@charon.cwi.nl>
- Organization: Western Michigan University
- Lines: 60
-
- In article <7938@charon.cwi.nl>, frankk@cwi.nl (Frank Kuiper) writes:
- >
- > [some text deleted]
- >
- > Within a station area, so called "lower placed signals (aka "dwarf
- > signals") are used. These are positioned most often at about a
- > hight of less than a yard above the top of the rail, next to the
- > track. These signals are only passable at a maximum of 40km/hr,
- > even if green is displayed. In these signals, a pulsating yellow
- > means "expect track to be occupied". This happens very often, as
- > the NS use trains which can be coupled and uncoupled at stations;
- > two trains meet from two directions, join and continue in a third
- > direction. There is also a meaning for pulsating green, but I can't
- > think of what it is, and I don't have my books at hand.
-
- Well, looking at a Conrail rulebook (amercian rr) here are the following
- signals with flashing green in them:
-
- r = red, y = yellow, g = green,
- R = flashing red, Y = flashing yellow, G = flashing green
-
- Approach limited:
- y y
- G G
- r | y
- | | G
-
- Limited clear:
- r r
- G G
- r | r G
- | | G |
-
- Now as far as other colors, heres signals with flashing yellow:
-
- Advance Approach:
- Y Y Y
- r r |
- r | |
- | | |
-
- Medium Approach:
- r
- Y
- | y
- | R <- flashing red for dwarf medium approach
-
- Slow Approach:
- r
- r
- Y
-
- And there's one other with a flashing red:
-
- Medium clear on a dwarf signal:
- g
- R
-
- Hope this helps, these was American signals by the way...
- Fred
-