||Selecting Track Diagram activates
the Main Route, Diverging Route and No Route Radio Buttons
and deactivates the List Box. Route buttons light the block
segments and signal icons. Mouse over and click on block segments to 'occupy'
the block. Occupied block will turn red. Re-click the segment to 'un-occupy'
the block. Mouse over and click signal icon to select signal to be displayed
in the Signal Window. A red carrot will identify the location of the signal
displayed. Change the block and/or signal to demonstrate the effect of
occupied blocks on signal aspects. The Signal Rule, Name and Indication
will appear in the boxes. The Main Route scenario is a stretch
of track with automatic signals and one interlocking signal using 4 approach
aspects, utilizing Limited Speed rules. The Diverging Route
scenario allows the selection of Limited, Medium, and Slow Speed
rules. Normally, a system like this would use approach lighting. NoRoute
resets the panel and darkens the signals.