R Hughes

AN EVALUATION OF THE LIGHTGUARD (TRADEMARK) PEDESTRIAN CROSSWALK WARNING SYSTEM

Herman F Huang, Charles Zegeer, R Hughes, 1999 .

Lane conditions, traffic speed, and volume: effects on cyclists' perception of risk in a virtual environment

D L Harkey, R Hughes, 1996 .

ITS AND PEDESTRIAN SAFETY AT SIGNALIZED INTERSECTIONS

Herman F Huang, C Zegeer, R Hughes, 1999 .