This book, authored by Tony Becker and Mike Reade, was designed to provide comprehensive and practical information on how to conduct effective and accurate pedestrian and cyclist crash investigations. It is intended for law enforcement officers, traffic engineers, and other professionals involved or interested in pedestrian and cyclist crash investigations. The information in the book is based on the latest research, literature, and data on pedestrian and cyclist crash investigations, as well as the over 35 years of experience and expertise of the authors. It is to be used as a guide and a reference for pedestrian and cyclist crash investigations and is not a substitute for training and experience. Topics covered in book include: Pedestrian and Cyclist Investigation, Evidence Collection, Pedestrian-Cyclist Dynamics and Trajectories, Pedestrian-Cyclist Formulas, Relevant Laws, Regulations, and Standards that apply to these types of crashes, and more. Appendices include a List of Symbols, a Glossary of Medical Terms, Data Collection Forms, and Resources and References.