1. Highway Engineer, Indiana Dept. of Transportation, 32 S. Broadway St., Greenfield, IN 46140.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Illinois, 205 N. Mathews, Urbana, IL 61801 (corresponding author).
3. Senior Pavement Engineer, Tensar International, 5883 Glenridge Dr., Suite 200, Atlanta, GA 30328.