Single-point urban interchange

A single-point urban interchange (SPUI, /ˈspuːi/ SPOO-ee or /ˈspjuːi/ SPEW-ee), also called a single-point interchange (SPI) or single-point diamond interchange (SPDI), is a type of highway interchange. The design was created in order to help move large volumes of traffic through limited amounts of space safely and efficiently.

This article reflects countries that drive on the right. For countries that drive on the left, reverse right and left.

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