버스 노선별로 번호 앞자리와 색이 정해져 있어, 미리 알고 있으면 버스를 헷갈리지 않을 수 있다.
Each bus line has a designated first digit and color for its number, so if you know this in advance, you can avoid confusing the buses.
Each bus route has a designated number and color, so if you know the bus in advance, you can avoid confusing the bus.