This is an example on how to split a given block into two. We start at the block took panel (…) and select a block we want to split. We mark some track elements that we want to separate for a new block, here a section on the left side of this block. Note, that the option “Split Block with “Selected” is enabled. We click on that menu option.
We see now a new panel “CTC Block Split for B2”. Note how the display of the panel where we came from has changed. The marked track elements that we wanted to place into the new block are now shown in green, the same color used in the split panel for the track list of the new block. The color red is used for the remnants of the old block after the split. Notice also the block order field in the upper left corner: It is the order that you see in the main window. If you would have started selecting track elements from the right end, you would see the green track elements on the right and the old track elements in red to the left – which is not the order when entering this pane. No problem – you just click on the order field so that the color sequence match the sequence seen on the main screen.
If you haven’t been careful with the track selection before entering this panel, you might see inconsistencies in the track assignments – some red elements then some green elements and then again some red elements (if you selected some track elements somewhere in the middle of the block). You can correct this by moving individual track elements between the old and the new list. You will have to move track elements if you started from the detailed block panel (…) – a click from there does not give and option to select elements for the new block at that point, and so all track elements will be listed in the old block column, while the track list of the new block will be empty.
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Notes:
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If there is a station, you have to select which of the two shall inherit the station.
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The lengths of the two blocks added together equals the length of the original block
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Speed limits will be the same on both blocks.
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No signals or other elements will be added between the two blocks.
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You can put the split blocks together into a superblock: CTC will create a 3rd block – the superblock – and link it such that for routing purpose replaces the original block.
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If the original block is as part of fixed routes, they will become invalid and you will have to rebuild such routes that include the new blocks.