@BOOK{NAP26027, author = "Transportation Research Board and National Academies of Sciences, Engineering, and Medicine", editor = "Christopher Cunningham, Thomas Chase, Yulin Deng, Chris Carnes, Kihyun Pyo, Institute for Transportation Research and Education and Pete Jenior, Bastian Schroeder, Brian Ray, Thomas Urbanik II, Julia Knudsen, Lee Rodegerdts, Shannon Warchol, Kittelson & Associates, Inc. and City of Portland Alison Tanaka", title = "Diverging Diamond Interchange Informational Guide, Second Edition", doi = "10.17226/26027", abstract = "The diverging diamond interchange (also known as a double crossover diamond interchange) is a relatively new design to the United States. This design can increase throughput and safety without widening bridge structures.The TRB National Cooperative Highway Research Program's NCHRP Research Report 959: Diverging Diamond Interchange Informational Guide, Second Edition presents a comprehensive guide to the design and operation of diverging diamond interchanges and updates material found in the FHWA\u2019s Diverging Diamond Interchange Informational Guide.A workshop summary is provided that includes an overview of key traffic signal timing concepts at diverging diamond interchanges\u2014from terminology to timing considerations and from operational analysis to traffic signal equipment. Videos viewed during the workshop are also provided.", url = "https://nap.nationalacademies.org/catalog/26027/diverging-diamond-interchange-informational-guide-second-edition", year = 2021, publisher = "The National Academies Press", address = "Washington, DC" }