http://www.mtr.com.hk/archive/ch/pdf/fam2021/R_MTRBus_and_FeederBus_L1286.pdf
免費轉乘優惠適用於巴士轉巴士、巴士轉港鐵 ／輕鐵、港鐵 ／輕鐵轉巴士及輕鐵 ／巴士轉港鐵再轉輕鐵 ／巴士，全程不可超過120分鐘，但並不適用於轉乘同一巴士路綫。於同一輕鐵站確認入站及出站，或20分鐘內於同一港鐵站入閘及出閘，均不可享有免費轉乘優惠。
Free interchange applies to transfers between buses, interchangesbetween bus and MTR/Light Rail, and transfers from LightRail/Bus to MTR to Light Rail/Bus. The whole journey must becompleted within 120 minutes. The free interchange does not apply if the same bus route is used a second time in the same combination. The free interchange discount is not availablewhen entry/exit is made at the same Light Rail stop, or within 20minutes at the same MTR station.
