Researchers at Portland State University and Oregon State University have updated the Oregon Department of Transportation (ODOT) Safety Investigations Manual (PDF), a resource to assist ODOT traffic investigators with highway safety project investigation, analysis, evaluation, and documentation.
The purpose of this document is to provide a resource to ODOT traffic investigators with highway safety project investigation, analysis, evaluation, and documentation. This manual includes checklists and analysis procedures suitable for a variety of field and office safety investigations and assessments. This manual also includes information about the ODOT highway safety programs and tools, linkage to current standards and resources where design and operations methods are stipulated, a comprehensive procedure for safety investigation at both intersection and highway segments, and countermeasure definition and guidance. Although the content of this manual is targeted for use within ODOT, the procedures outlined could be easily adapted by local jurisdictions for highway safety assessments. This manual does not contain roadway design policies or practices. The state traffic safety engineer maintains the Safety Investigations Manual.