1. Research Engineer, Institute of Transportation Studies, Univ. of California at Berkeley, Bldg. 452 (PRC), 1353 S. 46th St., Richmond, CA 94804.
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of California at Berkeley, 215 McLaughlin Hall, Berkeley, CA 94720.
3. Chief Design Engineer in Design C, California Dept. of Transportation (District 8), 464 West 4th St., San Bernardino, CA 92401-1400.