1. Senior Researcher, Highway Research Division, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro Ilsanseo-Gu, Goyang-Si Gyeonggi-Do 10223, Republic of Korea.
2. Senior Research Fellow, Highway Research Division, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-Ro Ilsanseo-Gu, Goyang-Si Gyeonggi-Do 10223, Republic of Korea.
3. Assistant Professor, Dept. of Civil Engineering, Chonbuk National Univ., 567 Baekje-Daero, Deokjun-Gu, Jeonju, Jeonbuk 54896, Republic of Korea (corresponding author).
4. Professor, Dept. of Transportation Engineering, Hanyang Univ., 1271, Sa 1-dong, Ansan-si, Gyeonggi-do 15588, Republic of Korea.