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Description
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Single light colour light signals with in-line marker light
Single light colour light signals with an in‑line red marker light are:
- controlled signals, or
- automatic signals, if an A sign or an A light is lit.
The marker light is lit if:
- the signal is at STOP, or
- the main light fails.
FIGURE 9: Single head signal forms.
Lower turnout units
A PROCEED indication for a turnout route is displayed by a diagonal row of yellow lights on the turnout unit.
The row of lights is angled up towards the turnout route.