Sound Transit finally began using the variable message signs (VMS) at SeaTac/Airport Station to tell passengers which train is next to depart for Downtown Seattle. The message, “THIS TRAIN TO SEATTLE”, is put up on the signs next to the train to depart. The other set of signs continue to say “Welcome to SeaTac Airport”. There was one case when they were wrong. Signs were pointing to a train going out of service and returning to the yard. Another train arrived shortly and when the out-of-service train left the station the signs switched to the correct train. That suggests the signs are operated automatically though I do not know for sure.
This is a good development in informing passengers and hopefully leads to some kind of next train countdown display, which we all are hoping for without any indication it’s going to happen. Past solutions that Sound Transit used include sandwich board signs and manually switched lighted signs at Tukwila International Boulevard Station before Airport Link opened.