To determine the effect of horizontal curvature, vertical curvature, and guardrails on driver passing behavior, a combination of field data collection and a driving simulator in a controlled environment were used. Field sites were identified along areas of concern to the Alaska Department of Transportation and Public Facilities: ...

In the United States, one in 12 households does not own a personal automobile, and approximately 13 percent of those who are old enough to drive do not. Trips by these individuals are being made in many other possible modes, creating the need to “share space” among many forms of travel. The goal of this project was to ...