en.wikipedia.org/wiki/Diverging_diamond_interchange

A diverging diamond interchange (DDI), also called a double crossover diamond interchange ... Had it been constructed, it would have been the first DDI in the United States. ... Construction began the week of January 12, 2009, and the interchange .... the number of lanes on the crossroad, minimizing space consumption.

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www.fhwa.dot.gov/publications/research/safety/09054

First U.S. DCD interchange at I-44 and Route 13 in Springfield, MO. ... An advantage of the DCD interchange over the conventional diamond is that exclusive ... potential safety benefits, right-of-way benefits, and reduced construction costs. ... and possible safety benefits will result in reduced fuel consumption and pollution.

www.mikeontraffic.com/diverging-diamond-interchange-ddi

Nov 28, 2017 ... The Missouri DOT built the first DDI in the United States in Spring Field, Missouri in 2009. ... They also reduce road construction costs by allowing a skinnier ... Another discussion is whether there is a need to signalize or use yield ... Benefits of Diverging Diamond Interchanges over Traditional Interchanges.

www.asphaltpavement.org/index.php?option=com_content&task=view&id=596&Itemid=1208

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www.ncdot.gov/initiatives-policies/Transportation/safety-mobility/diverging-diamond-interchanges/Pages/default.aspx

Nov 1, 2018 ... Pedestrians use signalized pedestrian crossings and are then directed to a ... Benefits of Diverging Diamond Interchanges ... right of way and the construction of fewer lanes and bridge structures than traditional interchange types. ... The United States' first Diverging Diamond interchange opened to traffic in ...