The
Alternate
Spur BitSwitch is designed as a stand alone BitSwitch or can be used with other BitSwitch
products.
A
train entering either spur (assume Spur A) it be stopped and held until
another train enters the adjoining spur (assume B).
When
the train entering the second spur B trips the trigger in that spur the
first train A will be released and the second train B will be held
on its spur until another train enters the first spur A.
This pattern will continue with one train always parked in either spur
A or spur B

Trains
may travel in either direction if the engine decoders dont require reverse DC
polarity for braking or if
Set Speed Zero
method is used for braking.

An accessory decoder that will automatically throw the turnouts would need to be installed as shown below. The trains can run in opposite directions or in the same direction alternating so that one train is in the station at all times.