Travelers using a transit card across Busan, Gimhae and Yangsan should verify the transfer rules. Busan Transportation Corporation says eligible prepaid or postpaid card users can receive up to two transfers (three different modes) when boarding the next mode within 30 minutes after alighting. Covered options include the metro, city/village/express buses, Busan–Gimhae Light Rail and parts of the Donghae Line. There is an important exception between the Donghae Line and transport services in Gimhae or Yangsan. Reboarding the same-numbered bus, or using the metro a second time after leaving it, may not qualify. The separate regional transfer surcharge of KRW 500 for adults and KRW 260 for youths was abolished on September 19, 2025, according to the operator. This does not mean every combined journey is free: distance-based Donghae charges and differences between base fares can still apply. Check the official fare examples and tap off when required.