1. Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 122 Civil Engineering Building, 500 Pillsbury Drive SE, Minneapolis, MN 55455
2. SRF Consulting Group, Inc., 1 Carlson Parkway North, Suite 150, Minneapolis, MN 55447-4443
3. Minnesota Traffic Observatory, College of Science and Engineering, University of Minnesota, 122 Civil Engineering Building, 500 Pillsbury Drive SE, Minneapolis, MN 55455