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London North Western
Railway:
 Midland
Railway:
 Stratford
Midland Junction Railway
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LMS Route: Nuneaton to Coventry
Coundon Road Station: lnwrcr39a
Close up of image 'lnwrcr39' showing Coundon Road level
crossing and the station's up LNWR upper quadrant semaphore starter signal on
the left. The description 'upper' or 'lower' quadrant semaphore signal refers
to the direction of travel of the signal arm. Upper quadrant signals were
raised from the horizontal or 'danger' position to indicate to the train crew
that they could proceed whereas 'lower' quadrant signals were lowered from the
horizontal position. Initially most railway companies operated lower quadrant
signals but following an accident where snow prevented the lower quadrant
signal to be raised most companies migrated to using 'upper' quadrant signals.
The exception to this rule was the Great Western Railway which continued to use
lower quadrant signals.
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