1. Associate Professor, Univ. of Idaho, P.O. Box 440901, Moscow, ID 83844-0901 (corresponding author).
2. Assistant Professor, Univ. of Idaho, P.O. Box 440901, Moscow, ID 83844-0901.
3. Professor, Univ. of Idaho, NIATT, P.O. Box 440901, Moscow, ID 83844-0901.
4. Traffic Operations Specialist, Mt. Baker Area Headquarters, WSDOT, 1043 Goldenrod Rd., Suite 101, Burlington, WA 98233-3425.
5. Graduate Research Assistant, Univ. of Idaho, NIATT, P.O. Box 440901, Moscow, ID 83844-0901.