Bicycle safety

Objective: This study sought to identify opinion-leading U.S. cities in the realm of safe transportation systems by surveying road safety professionals and asking them to identify places that served as models for road safety.

Methods: Using a purposive sampling methodology, we surveyed professionals employed in road safety–related professions (e.g., transportation engineering, planning, public health, law enforcement, and emergency response). Using 183 professionals’ complete responses, we carried out social network analysis to both describe the...

This project seeks to remove one important cause of intersection accidents: drivers, pedestrians and cyclists make mistakes because they lack sufficient information about the movement of others as they proceed through an intersection. There is spatial and temporal uncertainty. This missing information can be supplied by an ‘intelligent intersection’. It describes the signal from all approaches; predicts when the signal phase will change; uses sensor data to determine which blind spots are occupied; and predicts red light violations before they occur. The intelligent intersection broadcasts...