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and A is large enough. Even though a Virtual Contact is used the locomotives do not
have to match their speed profile as exactly as in Diagram 137, because A acts as a
brake indicator only and it does not matter, if trains begin to slow down a little bit too
early or too late.
Stopping in the Middle of a Platform
Virtual Contacts can also be used to stop trains automatically in the middle of a platform.
Diagram 141: Stopping in the middle of a platform
If the distances to the two reference points in the example displayed above is determined
accordingly, then the virtual contact is assumed to be located exactly in the middle
of the platform. In order to stop trains in the middle of the platform the option Middle
of train must be selected for both directions of travel. This is done in the dialog
shown in Diagram 135.
A special situation is the case, where a real momentary sensor is already located in the
middle of a platform. In this case locate the virtual contact exactly on the position of the
contact indicator assigned to the sensor. This is done by specifying the contact indicator
as reference indicator for both directions of travel and entering 0 as distance.
Please note that using the option Middle of train requires, that the correct length
of the affected engines or trains is specified accordingly.
Virtual Occupancy Indication
If an indicator is associated with a momentary contact then this contact can be upgraded
with the memory of the indicator to a virtual occupancy sensor (see section 12.1, “The
Memory of Indicators”). If this is done the indicator stays on after activation of the contact
until the complete train has passed the point where the contact is located. It is pos-
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