1. Assistant Research Professor, Connecticut Transportation Institute, Univ. of Connecticut, 270 Middle Turnpike Unit 5202, Storrs, CT 06269-5202 (corresponding author).
2. Software Developer, Epic Systems Corporation, 1979 Milky Way, Verona, WI 53593.
3. Assistant Research Professor, Univ. of Connecticut, 270 Middle Turnpike Unit 5202, Storrs, CT 06269.
4. Executive Director, Connecticut Transportation Institute, 270 Middle Turnpike Unit 5202, Storrs, CT 06269; Director, Connecticut Transportation Safety Research Center, 270 Middle Turnpike Unit 5202, Storrs, CT 06269; Researcher Professor, Univ. of Connecticut, 270 Middle Turnpike Unit 5202, Storrs, CT 06269.