This TechBrief reviews Federal Highway Administration (FHWA) Publication No. FHWA-HRT-04-091, "Signalized Intersections: Informational Guide." The Guide provides methods for evaluating the safety and operations of signalized intersections and tools to remedy deficiencies. The information contained in the Guide is based on the latest research available. It will help practitioners make insightful intersection assessments and understand the tradeoffs of potential improvement measures. The Guide includes examples of novel treatments and best practices in use by jurisdictions across the United States. The Guide takes a holistic approach to address signalized intersections and considers the safety and operational implications of a particular treatment on all system users (including motorists, pedestrians, bicyclists, and transit riders). It is organized into three parts: (I) Fundamentals; (II) Project Process and Analysis Methods; and (III) Treatments.
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