PURPOSES : This study explores the preference of shared autonomous vehicle service in an underground dedicated environment. METHODS : A stated preference survey was conducted to examine the mode choice behaviors on autonomous vehicle service competing with existing modes. Multinomial logit was employed to estimate the parameters of explanatory variables from the surveyed data. The model was estimated with alternative specific parameters rather than generic parameters. The value of time was also estimated using the parameters of the mode choice model. RESULTS : The results showed that the travel cost had the highest sensitivity to public transportation and the lowest to private cars. We also found that the value of the in-vehicle travel time was highest for private cars, lowest for public transportation, and intermediate for SAVs, suggesting that SAVs could serve as a premium public transport option. Additionally, the out-vehicle time coefficient was higher for public transportation compared to that for SAVs, indicating that users are more willing to tolerate longer out-vehicle times for SAVs due to their high-speed service compared to that of public transportation. CONCLUSIONS : This study presents a direction for policy regarding the adoption of shared autonomous vehicle services by considering the attributes that are valued by users of each mode.

1. 서론
2. 선행연구 검토
    2.1. 자율주행 전용도로 관련 선행연구
    2.2. 자율주행서비스 선호도 관련 선행연구
    2.3. 연구의 기여도
3. 연구방법
    3.1. 연구의 분석 과정
    3.2. 수단선택모형과 통행시간가치 추정
4. 잠재선호조사의 설계
    4.1. 공유자율주행서비스 구상
    4.2. 잠재선호조사 구성
    4.3. 설문조사 기초통계
5. 결과 및 분석
    5.1. 모형의 분석 결과
    5.2. 통행시간가치 추정
    5.3. 서울시 공유자율주행서비스 구상 방향
6. 결론 및 한계점
REFERENCES

• 박세현(서울연구원 도시교통연구실 연구원) | Park Sehyun
• 김선호(한국건설기술연구원 건설시험인증본부 박사후연구원) | Kim Sunho
• 김승준(서울연구원 도시교통연구실 선임연구위원) | Kim Seung-Jun
• 조신형(서울시립대학교 교통공학과 연구교수) | Cho Shin-Hyung Corresponding author