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박제진(JeJin Park),박진호(JinHo Park) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
Traffic safety facilities are used to prevent traffic accidents before they occur providing drivers with information about geometric design of roads and traffic situations. However, it is true that some of facilities which are not defined in the guideline nor meet installation criteria are being installed and used in order to increase efficiency in traffic and prevent traffic accidents in a specific zone of expressway. According to the existing study results for lanes of expressways, yellow lanes were shown to have a shorter life than white lanes, requiring more maintenance and repair. Depending on the factors such as pavement material, painting material, traffic, etc. Since these colors of road surface differ according to pavement materials by asphalt and concrete. The results of virtual driving test were no statistically significant difference in vehicle biasing or left/right movement deviation within a lane, driving speed, and vehicles behavior. Since there is no difference in driving pattern, driving stability or psychological concentration, the yellow centerline may be substituted with the white centerline.
고속도로 자율주행 전용차로 도입 시 혼합교통류 특성 분석 시나리오 개발 연구
김형준(KIM, Hyeongjun),백성채(BAEK, Seongchae),윤덕근(YUN, Dukgeun),박제진(PARK, Jejin) 대한교통학회 2021 대한교통학회지 Vol.39 No.6
Recently, various laws and regulations to revitalize autonomous vehicles and national, private research, development tasks are underway and the commercialization of connected and autonomous vehicles driving technologies is approaching. Accordingly, it is necessary to review the introduction of exclusive lanes for autonomous vehicles to establish a new road ecosystem. In this study, a scenario for analyzing the characteristics of mixed traffic flow according to the introduction of exclusive lanes was developed, and the scenario was analyzed in terms of mobility. As a result, merging area and diverging area deteriorated traffic flow as the LOS and MPR increased when introducing exclusive lanes, resulting in a decrease in traffic volume. In addition, in the LOS D-E and MPR 10-20% sections, when exclusive lanes were introduced, a phenomenon occurred in which lanes other than exclusive lanes were supersaturated. Therefore, “no exclusive lane” without platooning was the best in terms of mobility, and the adverse effect of the introduction of exclusive lanes was most pronounced in the LOS D-E and 10-20% MPR sections. However, except for the section when introducing exclusive lanes for connected and autonomous vehicles, the introduction of “third lane” better results in terms of mobility than the introduction of “first lane”. In future studies, all variable values applied in this study should be redefined in consideration of the specifications and technologies of autonomous vehicles currently being developed. This study is meaningful in establishing various scenarios to be considered when introducing exclusive lanes for autonomous vehicles based on connected and autonomous vehicles, and it is suggested that the results of this study can be used as basic frame when conducting research on exclusive lanes for autonomous vehicles in the future.
초소형전기차 사용자만족도 구성요인 선정을 위한 기반연구
진은주(Jin, Eunju),서임기(Seo, Imki),김종민(Kim, Jongmin),박제진(Park, Jejin) 대한토목학회 2021 대한토목학회논문집 Vol.41 No.5
최근 국내 초소형전기차 도입이 증가하면서, 관련 시장 활성화를 위한 초소형전기차 사용자만족도에 대한 관심이 증가하고 있다. 본 논문에서는 사용자만족도 구성요인을 기반으로 초소형전기차를 활용한 공공서비스 개발에 관한 기초연구를 수행하였다. 설문조사는 ① ‘초소형전기차 사용자만족도 구성요인 우선순위 선정을 위한 계층화(AHP) 분석’과, ② 초소형전기차에 대한 사용자들의 선호도 및 교통서비스 제공을 위한 사전 자료수집을 위한‘초소형전기차 이미지 설문조사’, ③ 실제 초소형전기차를 운행한 이용자의 사용자만족도를 조사하기 위해 ‘초소형전기차 운전자 사용자만족도 설문조사’순서로 수행하였다. 계층화(AHP) 분석에서는 ‘사용자 이용 데이터’, ‘차량 이동 데이터’, ‘충전서비스 데이터’순으로 사용자들이 중요하게 여긴다는 결과를 얻었다. 초소형전기차 이미지 설문조사에서는 사용자들이 초소형전기차를 오토바이와 비교했을 때 ‘안전성’, ‘내구성’, ‘승차감’, ‘디자인’, ‘유지관리비’, ‘친환경성’측면에서 더 긍정적으로 인식하고 있었다. 초소형전기차 운전자 사용자만족도 설문조사에서는 초소형전기차를 사용하는 것이 업무수행능률에 직접적인 영향을 미치지는 않았으며, 초소형전기차의 차량크기로 인해 도로에서의 불이익을 받은 경험이 있었고, 옥외 광고용으로 초소형전기차 군집 주행 시 홍보효과가 컸지만 안전성 측면에서는 우려를 나타내고 있었다. 향후 본 연구결과를 바탕으로 사용자만족도 구조방정식 모델을 구축할 예정이며, 선제적으로 공공분야에서의 초소형전기차 활용업무 서비스에 대한 피드백 R&D를 발굴하고, 새로운 공공 이동지원 서비스 발굴을 적극적으로 모색하고자 한다. With the recent increase in the introduction of micro-electric vehicles in Korea, interest in micro-electric vehicle user satisfaction is increasing to revitalize related markets. In this paper, a basic study was conducted on the development of public services using micro-electric vehicle based on the constituent factors of user satisfaction. The survey includes: ① ‘Analytic Hierarchy Process (AHP) for selecting the priority factors of user satisfaction of micro-electric vehicles’, ② ‘A survey of micro-electric vehicles image’ to collect data in advance for providing users’ preferences and transportation services for micro-electric vehicles, ③ In order to investigate the user satisfaction level of users who actually operated micro-electric vehicles, the order of "user satisfaction survey of micro-electric vehicle drivers’ was conducted. In the Analytic Hierarchy Process (AHP) analysis, it was found that users regarded as important in the order of ‘user utilization data’, ‘vehicle movement data’, and ‘charging service data’. In the micro-electric vehicle image survey, users perceived micro-electric vehicles more positively in terms of “safety”, ‘durability’, ‘Ride comfort’, ‘design’, ‘MOOE (Maintenance and other operating expense)’, and ‘environment-friendly’ when comparing micro-electric vehicles with electric motorcycles. In the survey on the user satisfaction of micro-electric vehicle drivers, the use of micro-electric vehicle did not directly affect work performance efficiency, and there was an experience of being disadvantaged on the road due to the size of the micro-electric vehicle, and driving in a cluster of micro-electric vehicle for outdoor advertisements. The city"s public relations effect was great, but it was concerned about safety. In the future, based on the results of this study, we plan to build a user satisfaction structural equation model, preemptively discover feedback R&D for micro-electric vehicle utilization services in the public field, and actively seek to discover new public mobility support services.