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Split intersection

A split intersection is a rarely-built at-grade variant of the diamond interchange. Compared to a conventional four-leg intersection or road crossing, the arterial road is split into separate carriageways by 200 to 300 feet, which allows a queue of left turning vehicles behind a completed turn into the crossroad without any conflict to oncoming traffic. On the crossroad, the four-leg intersection is replaced by two intersections.

Existing examples
• At Legacy Drive and Preston Road, Plano, Texas, with Texas U-turn lanes, • At New Dallas Highway (US-77) and E. Industrial Boulevard TX-340 in Lacy Lakeview, Texas, • At Stock Road and Winterfold Road in Perth, Australia • It is the most common intersection design on Utah State Route 85, also called Mountain View Corridor. They are planned to be later converted, mostly into diamond interchanges, by adding a bridge in the middle. • At Sarcee Trail and Richmond Road, Calgary, Alberta, Canada, • Four intersections along Terwillegar Drive in Edmonton, Alberta, Canada • Four intersections along Manning Drive in Edmonton, Alberta, Canada • Lake Woodlands Drive at Grogans Mill Road in The Woodlands, Texas; • Along Highway 10 in Surrey, British Columbia, at the intersection with King George Boulevard; • At West Ridge Road (NY-104) and Long Pond Road, in Greece, New York. This intersection is also signed as a Truck U-Turn, as trucks wishing to access commercial property on the opposite side of the divided roadway are only permitted to perform U-Turns at intersections signed as such. ==Town center intersection==
Town center intersection
A town center intersection (TCI) is similar to a split intersection; however, both the arterial road and the crossroad are split into separated one-way streets. The resulting grid, most often implemented in a city, reduces conflicts to two directions per intersection. The TCI's grade-separated variant is the three-level diamond interchange. Examples • Grogans Mill Road at Research Forest Drive in The Woodlands, Texas; • Springwoods Village Parkway at Holzwarth Road in Spring, Texas; • San Elijo Road at Elfin Forest Road in San Marcos, California; • 170 Street and Stony Plain Road and 100 Ave in Edmonton, Alberta. ==See also==
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