This is the 15714th most frequent Korean word.
보행자인
"보행자인" means "pedestrian."
In this sentence, '보행자인' modifies '사람들' to specify those people who are pedestrians.
보행자인 사람들은 항상 신호등을 주의해야 합니다.
Pedestrians must always pay attention to the traffic lights.
Here, '보행자인' describes the recipient of the services, indicating it's designed for those who walk.
도시의 보행자인에게 편리한 산책로가 제공됩니다.
Convenient trails are provided for pedestrians in the city.
In this case, '보행자인' is used to convey the quality of being a pedestrian regarding the context of a traffic incident.