一个打折火车票（EC/ICE）规则的问题

If ticket unused - 100% refundable up to 1 day before validity plus EUR 17,5 fixed fee. Thereafter no refund. Ticket is not exchangeable. VALID ONLY FOR BOOKED TRAINS/CLASS/ TRAVEL DAYS. APPLIES ONLY TO USE LOCAL TRAFFIC (S/RB/RE/IRE) TO/FROM BOOKED TRAINS ON 1st DAY TO THE FOLLOWING DAY AT 10 AM

请问applies only to这段是什么意思

票类型是二等舱 Sparpreis