This is the 17321st most frequent Korean word.
선로에
"On the railway track."
The word "선로에" is used here to indicate the location of the train in a spatial context.
기차가 선로에 정지했습니다.
The train stopped on the track.
In this sentence, "선로에" describes a location where potential danger exists due to its condition.
아이가 선로에 들어가면 위험해요.
It is dangerous if a child goes onto the train track.
Here, the term "선로에" refers to the focus of an ongoing action regarding railway construction.