This switch is similar to the "Station BitSwitch™" in that it controls the merge of two lines or spurs to a single line. This switch provides control when the "DC Brake Generator BitSwitch™" is set for automatic.
The first train arriving in the "Merge" blocks will be immediately released to the main line if the next block in the line is vacant.
The second train to enter the "Merge" blocks will be stopped using CV4 until the first train clears the next block in the main line.
If no trains are in forward blocks or on the adjacent line the train is not affected.
This switch has special application and may also be used to provide entry for a train into an automatic section of your layout from an uncontrolled section.
In any case the trains in the merge section can be sent new commands for speed changes, lights, sound etc.. If a BitSwitch has stopped an engine, the new command will not be activated until the train is released.