1. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
2. Department of Urban Planning and Engineering, Yonsei University, Seodaemun-Gu, Seoul, Republic of Korea
3. Transportation Safety Research & Development Institute, Korea Transportation Safety Authority, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
4. Department of Transportation Systems Engineering, Ajou University, Yeongtong-gu, Suwon, Gyeonggi-do, Republic of Korea