고속도로 휴게소 버스 환승 서비스 이용자 특성을 이용한 온실가스 감축 효과 분석

Abstract

Bus transfer service at expressway rest areas was introduced in 2009 to improve the bus transit system among small to medium size cities where bus lines are not as well provided compared to metropolitan cities. As this service directly connects inter-city bus services among small or medium sized cities at rest areas, it may help users to save travel time and money. Also it may decrease car usage and increase modes of mass transit (i.e. inter-city bus) ridership. With this background, this paper aims at analysing user characteristics of the service and estimating the GHG emission reduction effect by the service. The analysis was based on service user interviews conducted at Jeongan and Seonsan Rest Areas. The user characteristics showed that most individuals use the service for work or social purposes. At the Jeongan Rest Area, 58% of interviewees change their mode from car to inter-city bus. Jeongan is on the expressway corridor connecting Seoul and Gyeonggi Province with the Honam region. Thus, this statistic may indicate that those from small or medium cities traveling to or from the regions may have had experienced low levels of public transport services before the service began. The reduced GHG emission by the service at the two rest areas is approximately 6,325 tCO2 per year. The cost to reduce a unit ton of GHG emission by the four rest area transfer services is about 128,000 won; a lower than average cost of most GHG mitigation measures. Considering the sustainability and welfare effects as well as efficiency, the service is worth being introduced to more locations on national expressway corridors.