A single-point urban interchange (SPUI, /ˈspuːiː/ or /ˈspjuːiː/), 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.
Description
A single point urban interchange is similar in form to a diamond interchange, but has the advantage of allowing opposing left turns to proceed simultaneously by compressing the two intersections of a diamond into one single intersection over or under the free-flowing road.
The term "single point" refers to the fact that all through traffic on the arterial street, as well as the traffic turning left onto or off the interchange, can be controlled from a single set of traffic signals. Due to the space efficiency of SPUIs relative to the volume of traffic they can handle, the interchange design is being used extensively in the reconstruction of existing freeways as well as constructing new freeways, particularly in dense urban environments.
The intersection, which will be a single-point urban interchange, will include a two-phase signal light system for Market Street rather than the eight phases that drivers currently adhere to.
... a biodiverse urban forest in the coastal road's green space. 'We need a single point person to address these pressing issues,' added Mamta Mangaldas, co-founder of the Breach Candy Residents' Forum.
Highway 63 connecter, there were some missing elements ...Enhancement designs at the time were based on MoDOT's direct connection flyover ramps and single-point urban interchange model for the connector ... Olsen agreed ... will remain similar," she wrote ...
Previous plans used a single-point urban interchange. This is an interchange where only left-hand turns are stopped by a traffic light ... under Millstone Weber plans has it as a half-diamond interchange.
Such improvements, Shaw added, could include replacing the current partial interchange with a “fully directional single point urban interchange,” which would be located about 800 feet south of where ...
The reconstruction of the interchange at U.S ... The design, known as a single point urban interchange, eliminated the two loops on the north side of U.S ... The agency cited several reasons for needing to replace the old interchange.
interchange will be reconstructed as a Single-PointUrban Interchange, which will allow traffic to move through the interchange safely and more efficiently with only one set of traffic signals allowing for longer signal cycles.
Crews will replace the bridges carrying SR 60 over US 27 and reconstruct the interchange from a partial cloverleaf design to a SinglePointUrban Interchange.
Crews will replace the bridges carrying SR 60 over US 27 and reconstruct the interchange from a partial cloverleaf design to a SinglePointUrban Interchange.
Crews will replace the bridges carrying SR 60 over US 27 and reconstruct the interchange from a partial cloverleaf design to a SinglePointUrban Interchange.
replacing the current bridges generally in the current configuration but with other improvements at the interchange, a DDI, or a single-point urban interchange ... about the I-75/M-32 interchange project.
I-75 at SR 951 (exit 101) Interchange Improvements ... I-75 at US 301 Interchange (Exit 224) ... Crews will replace the bridges carrying SR 60 over US 27 and reconstruct the interchange from a partial cloverleaf design to a SinglePointUrban Interchange.
• I-26/I-81 interchange. Congestion at this interchange is perceived to create delays and safety issues due to excessive weaving movements and lack of capacity ... This SinglePointUrban Interchange is perceived to experience congestion problems.
I-75 at SR 951 (exit 101) Interchange Improvements ... This single-lane flyover ramp will carry traffic over BeckBoulevard ... A single-lane flyover ramp ... I-75, just west of the interchange ... cloverleaf design to a SinglePointUrban Interchange.
