Getting around

(으)로 marks the means, 'by' or 'via'; it also marks direction, which you will meet later. After a consonant it needs the buffer 으, as in 2호선으로 'to line 2' below. The exception is ㄹ: a word ending in ㄹ takes plain 로, because ㄹ runs smoothly into ㄹ and there is no clash to fix, so it is 지하철로, never 지하철으로. Korean treats a final ㄹ almost like a vowel in several places, as with 살 거예요 on day 27.

English says 'on the bus' and 'off the train', so learners reach for 에. Korean sees 타다 as an ordinary action with a thing it acts on: you ride the bus, so the bus is the object and takes 을/를. You will hear 에 with 타다 when the point is physically climbing in, as in 차에 타세요 'get in the car', but for taking transport, 을/를 is the form to learn first. Getting off, by contrast, happens at a place, so the station takes 에서.

A taxi driver needs a destination and a stopping point, and both use the ending you learnt on day 26: 가 주세요 is 'please go (for me)', 세워 주세요 'please stop (for me)'. Korean subway stations have many exits, each numbered, and every map, shop listing and invitation names one. 몇 번 is the standard way to ask 'which number' for exits, buses and lines alike: 몇 번 버스예요? 'Which bus number is it?'. When a Korean friend suggests meeting at a station they will almost always add an exit number, and if they do not, it is worth asking.