1. Assistant Professor, Economics of the Sustainable Built Environment (ESBE) Lab, School of Building Construction, Georgia Institute of Technology, 280 Ferst Drive, 1st Floor, Atlanta, GA 30332-0680 (corresponding author).
2. Ph.D. Candidate, Economics of the Sustainable Built Environment (ESBE) Lab, School of Building Construction, Georgia Institute of Technology, 280 Ferst Drive, 1st Floor, Atlanta, GA 30332-0680.
3. Professor, Univ. of Colorado at Boulder, Campus Box 428, ECOT 643, Boulder, CO 80309-0428.
4. Senior Deputy Director, Road Planning and Construction Division Ministry of Land, Transport, and Maritime Affairs, 88 Gwanmun-ro, Gwacheon-si, Gyeonggi-do, Republic of Korea, 427-712.