 For this reason, the southern platforms can only be used by trains that continue to the 61st or Lower 63rd Yards.The southern platform is also used by rush-hour trains that run empty to and back to Cottage Grove or to (this is done to allow a quick and easy transfer to another branch at Garfield).The one-track setup works for Cottage Grove because the station only sees trains arrive/depart every 20–25 minutes.