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Train 1 may enter block B but not block C, because block C is still reserved and occupied
by train 2.
The calculated block signal for train 1 in block A is green, because train 1 may leave
block A and enter block B without any restrictions. This is also indicated by signal A,
which is assumed to belong to block A.
Since train 1 must not enter block C, the block signal of block B is calculated as red (in
this case an advance signal is not indicated in the Train Window). This state is indicated
by signal B of block B.
Train 2 may leave block C and enter block D only with restricted speed. For this reason
the calculated block signal for train 2 in block C is yellow. This state is indicated by
signal C, that belongs to block C.
Additional Notes
The internal signalling system of TrainController does not claim to simulate realistic
signalling systems of the prototype. For each block the software only calculates,
whether a train may leave this block to the related direction and whether any speed restrictions
apply. This calculation is only done for those blocks, that are currently in the
focus of an active schedule.
By linking integrated block signals to signal models on your layout the internally calculated
aspects can be made visible on the layout if desired. This simplified signalling system
is easily arranged and matches the requirements of playful model railroad operation.
If a signalling system according to the rules of the prototype is desired, then this can be
achieved by using the calculated block signals, reservation and occupancy states of related
blocks, turnout positions as well as logical associations based on triggers and
conditions as outlined in section 12.5, “Prototypical Signalling”.
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