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ROL

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ROL 07/08/2015 at 16:51 #74866
Oddjob
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130 posts
What do the letters ROL at each end of the station mean or indicate? I have seen them on another sim - Feltham I think.

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ROL 07/08/2015 at 16:53 #74867
Sacro
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1171 posts
Reduced overlap
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ROL 07/08/2015 at 16:58 #74869
Peter Bennet
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5354 posts
Reduced Overlap.

Peter

I identify as half man half biscuit - crumbs!
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ROL 08/08/2015 at 01:55 #74885
Hooverman
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306 posts
It's stands for Restictive OverLap

Railway Group Standard GK/RT0064
Issue One
Date December 2000

Provision of Overlaps, Flank Protection and Trapping

3 Definitions

Overlap
The distance beyond a stop signal which must be clear, and where necessary locked, before the stop signal preceding the signal in question can display a proceed aspect:

a) Full Overlap - An overlap of at least 180 metres (or 400 metres in the case of a semaphore signal where the preceding caution signal is also a semaphore type).

b) Reduced Overlap - An overlap that is shorter than the minimum permitted length of a full overlap, where the permitted approach speed is below a specified level which still allows an unrestricted approach to a signal at danger (ie approach control is not necessary).

c) Restricted Overlap - An overlap that is shorter than the minimum permitted length of a full overlap, which is available only when the preceding signal is subject to approach control by selection of a warning class route.

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