This book investigates the critical criteria for passing sight distance on roadways, a fundamental aspect of highway safety design. Douglas W. Harwood, a recognized expert in transportation engineering, synthesizes research and data to establish reliable guidelines for ensuring drivers have adequate visibility to safely overtake other vehicles. The work aims to provide engineers and planners with the necessary information to design roads that minimize the risk of passing-related accidents.

This technical publication is recognized within the transportation engineering community as a significant contribution to road safety standards. It is valued for its rigorous approach to a complex problem, providing engineers with updated, data-driven criteria for highway design. The work is expected to influence future road construction and safety guidelines.