Learn Russian: Этот автобус едет в центр, а тот — на вокзал. - This bus goes to the centre, and that one to the station.

Both are in the accusative case because they indicate the direction of motion. We usually use в (into/to) for enclosed spaces or areas like центр (the centre). However, вокзал (train station) is a special word in Russian that requires the preposition на instead of в. Other common exceptions like this are на почту (to the post office) and на работу (to work).

Why use едет instead of идёт for "goes"?

Russian has different words for going by foot versus going by vehicle. Идёт is for walking, but since a bus is a vehicle, we must use едет (goes by transport). It specifically means the bus is currently on its way in a single direction.

What is the difference between этот and тот?

Этот means "this" (closer to the speaker), and тот means "that" (further away). In this sentence, they both match the masculine noun автобус (bus). By saying а тот, you are saying "and that [bus]".

The English translation says "and", so why is the Russian word а instead of и?