What does SPUI stand for?

MLA style: "SPUI." Acronym Finder . 2012. AcronymFinder.com 3 Jun. 2012 http://www.acronymfinder.com/Single-Point-Urban-Interchange-(SPUI).html
Chicago style: Acronym Finder . S.v. "SPUI." Retrieved June 3 2012 from http://www.acronymfinder.com/Single-Point-Urban-Interchange-(SPUI).html
APA style: SPUI. (n.d.) Acronym Finder. (2012). Retrieved June 3 2012 from http://www.acronymfinder.com/Single-Point-Urban-Interchange-(SPUI).html

Single Point Urban Interchange

This definition appears very rarely

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Samples in periodicals archive:

It's the first Single Point Urban Interchange in Idaho, which means it has a single traffic light at the center of the interchange, similar to the Cole Interchange.

United States: Construction underway for Vista Interchange ...

Fontaine; Single Point Urban Interchange Design Operations Analysis by C.

Does your interchange design have you going around in circles?