1. Washington Center for Asphalt Technology, Department of Civil and Environmental Engineering, Washington State University, 405 Spokane Street, Pullman, WA 99164-2910
2. Louisiana Transportation Research Center, Louisiana State University, 3520B Patrick F. Taylor Hall, Baton Rouge, LA 70808
3. Division of Business and Engineering, Pennsylvania State University at Altoona, 103B Sheetz Family Health Center, Altoona, PA 16601
4. Department of Civil and Environmental Engineering, Temple University, 1947 North Twelfth Street, Philadelphia, PA 19122