1. Assistant Professor, Dept. of Civil and Environmental Engineering, Brigham Young Univ., 368 Clyde Building, Provo, UT 84602 (corresponding author).
2. Transportation Engineer, Hales Engineering, 179 North 1200 East, Suite 103, Lehi, UT 84043.
3. Local Governments Planner, Utah Dept. of Transportation, Systems Planning and Programming, 4501 South 2700 West, Salt Lake City, UT 84119.