Split intersection explained

A split intersection is a rarely built at-grade variant of the diamond interchange.[1] Compared to a conventional four-leg intersection or road crossing, the arterial road is split into separate carriageways by 200feetto300feetft (toft), allowing 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 being replaced by two intersections. The beginning one-way traffic at the fourth leg makes the intersections reduce the number of conflicts similar to a three leg T-intersection to improve traffic flow.[2] [3]

Existing examples

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.[4] [5]

The TCI's grade-separated variant is the three-level diamond interchange.

Examples

See also

Further reading

External links

Notes and References

  1. Joe G. . Bared . Evangelos I. . Kaiser . amp . Advantages of The Split Intersection . Public Roads . . 63 . 6 . June 2000 .
  2. Joe . Bared . Evangelos . Kaiser . amp . 2000 . Benefits of Split Intersections . Journal of the Transportation Research Board . . 1797 . 34–41 . 10.3141/1737-05 .
  3. Book: Lee A. . Rodegerdts . Brandon . Nevers . Bruce . Robinson . John . Ringert . Peter . Koonce . Justin . Bansen . Tina . Nguyen . John . McGill . Del . Stewart . Jeff . Suggett . Tim . Neuman . Nick . Antonucci . Kelly . Hardy . Ken . Courage . amp . Federal Highway Administration . https://www.fhwa.dot.gov/publications/research/safety/04091/10.cfm#c1031 . Signalized Intersections: Informational Guide . Chapter 10.3.1 . FHWA-HRT-04-091 . 2004 . (PDF)
  4. Web site: Town Center One-Way Couplets (Pt 1) | Place Making Alternative Intersections.
  5. Web site: See all Town Center Intersections.