The example you cited is operated by a central government entity, the Taiwan Railways Administration, and is used in a few places inside and outside the station

The example you cited is operated by a central government entity, the Taiwan Railways Administration, and is used in a few places inside and outside the station, just as every other central government building uses the traditional form. On every other map and sign it's 台北車站. The tickets printed by the TRA even use 台北 or 台北車站.