The red color controls the train's stopping. Place one red snap after a white one to make the train stop for 2 seconds, use two reds to stop it for 5 seconds or three reds to stop it for 10 seconds. After the brief stop, the train will resume driving at the speed it had prior to the stop.
If you would like the train to come to a continuous stop, use the white | red | blue 'end of route' command.
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