Re: Crossing loop design (r.e. Southern Aurora crash)

[Tony Gatt <baulko@tig.com.au>]

>
>
> You have to remember that the top light tells you that the train can travel at
> "normal speed"
> the bottom light tells you the train must travel at "medium speed"
>
> If a signal is G/R it tells you that you are on "top lights" as far as your
> concerned the bottom light doesn't exist, its red, its saying, "you are not
> travelling on bottom lights" Same thing with R/G, the top red is saying, you
> are getting medium speed lights, ignore me, look at the bottom light.
>
> Y/G "reduce to medium" is the aspect that takes you from top lights to bottom
> lights. It means its ok to pass THIS signal at normal speed but you must be
> down to medium speed by the next signal.
>
> In effect, you are either running on top lights or bottom lights, normal speed
> or medium speed.

it don't get much simpler than that really does it?

>
>
> Mark.
>
> Visit my train pic website at:
> http://home.earthlink.net/~markbau/

--
Thanks, Tony.

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