2010JMRI KevinDickerson 1 2010-01-18 KD Initial Version 1.1 2010-02-02 KD Change Stop Aspect to On & proceed at Caution to Off 1.2 2011-08-04 KD Addition of Specific Appearances and aspect mapping BR Position Light Signal Yellow/White This uses a single head to control the appearance The signal is used where a set of points can be set to either go up to a shunt neck or siding, or out onto the main running line. If the signal is displaying Yellow/White or two Yellows then this means STOP if the points are set out onto the main line. If the points are set to the shunt neck or siding then movements are allowed to pass. When two white lights at 45degrees are showing, this authorises the driver to proceed at caution towards the next stop signal. Off lunar ../../../resources/icons/BritishRailSignals/Large/clsPLOff.gif ../../../resources/icons/BritishRailSignals/Aspects/PLOff.gif On yellow ../../../resources/icons/BritishRailSignals/Large/clsPLYOn.gif ../../../resources/icons/BritishRailSignals/Aspects/PLYOn.gif On Off On