1. Research Associate Professor, Louisiana Transportation Research Center, Louisiana State Univ., Baton Rouge, LA 70808 (corresponding author).
2. Execution Planning Engineer, ExxonMobil Development Company, Houston, TX 77060; formerly, Graduate Student, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
3. Boyd Professor, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
4. Research Associate, Louisiana Transportation Research Center, Louisiana State Univ., Baton Rouge, LA 70808.