PURPOSES : The aim of this study is to develop equitable smart mobility indicators for road infrastructure users based on the recognition of lack of social equity evaluation indicators from the perspective of road infrastructure users. METHODS : In this study, vertical equity was expressed as the ratio of tolls to users' willingness to pay, depending on the income level. In each area, the time of travels to frequent destinations may differ, depending on the road infrastructure configuration use of tolled and untolled roads. When using tolled roads to save travel time, users have to pay tolls. In this case, the number of tolls that users have to pay and the users’ willingness to pay for tolls in the area based on their income levels were compared to determine vertical equity differences. Here, users' willingness to pay was estimated through a questionnaire survey on the travel time value based on the income level and matched with the income level of the area to determine residents' willingness to pay in the area. RESULTS : This study reveals that there is a significant difference in social equity for road infrastructure use based on income level. This difference in the indexing was reflected in developing an indicator based on distribution equity. CONCLUSIONS : The proposed vertical equity assessment method is relatively simple and can be utilized as a tool for establishing policies. As a basic tool for analyzing vertical equity in road pricing, it can be effectively applied to analyzing the vertical equity of road users in countries such as Japan, where tolls for highways are very high, and the United States, where tolls are charged in forms of Turnpike and HOT.

2016년 국가재정운용계획에 따르면 향후 5년간 SOC 투자 규모는 매년 6% 이상 감소될 예정이기 때문에, 도로 분야에서도 선택과 집중 전략을 통한 효율적 SOC 투자 방향 수립이 필요하다. 영국(잉글랜드)의 경우, 2014년부터 국가전략적 차원에서 고속도로와 주요 간선도로를 중심으로 전략도로망(Strategic Road Network, SRN)을 선정하여 집중적으로 관리하고 있다. 본 연구에서는 영국의 SRN 사례를 참고하여 국내 여건에 맞는 국가전략도로망의 개념을 정의하고, 객관적인 지정 방안을 제안하는데 의의를 두었다. 분류 방안으로는 KTDB 네트워크 기준 도로의 교통량 실적에 기반한 분류 방안과 주요 거점을 연결하는 분류 방안을 고안하였으며, 두 가지 분류 절차에 따라 선정된 도로를 취합하여 최종 국가전략도로망을 지정하였다.