Studies of pedestrian behaviour have gained attention in a variety of disciplines. Different technologies have been used to collect data about pedestrian movement patterns. This book aims to document these developments in research and modelling approaches. It includes modelling approaches such as cellular automata models and fluid dynamics.

This volume contains the papers and discussions from a Symposium on :'Hu man Behavior and Traffic Safety" held at the General Motors Research Labora tories on September 23-25, 1984. This Symposium was the twenty-ninth in an annual series sponsored by the Research Laboratories. Initiated in 1957, these symposia have as their objective the promotion of the interchange of knowledge among specialists from many allied disciplines in rapidly developing or chang ing areas of science or technology. Attendees characteristically represent the aca demic, government, and industrial institutions that are noted for their ongoing activities in the particular area of interest. of this Symposium was to focus on the role of human behavior The objective in traffic safety. In this regard, a clear distinction is drawn between, on the one hand, "human behavior," and on the other "human performance." Human per formance at the driving task, or what the driver can do, has been the subject of much research reported in the technical literature. Although clearly of some rel evance, questions of performance do not appear to be central to most traffic crashes. Of much more central importance is human behavior, or what the driver in fact does. This is much more difficult to determine, and is the subject of the Symposium.

This book aims to help the reader to understand what motivates people to engage in risk taking behavior, such as participating in traffic, sports, financial investments, or courtship. The consequences of risk taking may be positive, or result in accidents and injuries, especially in traffic. The wealth of studies and theories (about 1000 references) is used to offer a cohesive, holistic view of risk motivation. The risk motivation theory is a dynamic state-trait model incorporating physiological, emotional and cognitive components of risk perception, processing and planning. If a deficit exists between desired and perceived risk, risk compensation behavior results. A feedback loop provides new information for the next perception-motivation-behavior process. Assumptions were tested and support was found with 120 subjects in a longitudinal study. The concepts and findings are discussed in relation to psychological theories and their meaning for our daily lives.

Thirteen reports prepared for the 55th annual meeting of the Transportation Research Board.