링크로 적용 시에 방향성 고려의 어려움과 하나의 교차로가 여러 개의 링크로 구분될 오류가 있기 때문에 노드로 설정하였다.
When applied as a link, it was set as a node because it was difficult to consider the direction and there was an error in that one intersection was divided into several links.