Offset T-intersection
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An offset T-intersection[1] is an at-grade road intersection where a conventional four leg intersection is split into two three-leg T-intersections to reduce the number of conflicts and improve traffic flow.[2] Building the offset T-intersections as continuous green T-intersections (also called seagull intersection), there is a single stop on the arterial road, only.[3] A higher volume of through traffic on the cross road,[4] or on unsignalized intersections, a rebuild to a conventional four-leg intersection may be adequate, also when the offset is a few feet only like staggered junctions causing slower traffic for a longer time on the arterial road.[5]
Seen as a spur route or access road, offset T-intersections can be seen as an A2 or B2 type partial cloverleaf interchange with no arterial road.[6]
See also
References
- ^ Federal Highway Administration (April 2010). "Chapter 6.3.4". Alternative Intersections/Interchanges: Informational Report (AIIR). Federal Highway Administration. FHWA-HRT-09-060. Retrieved 8 May 2016.
- ^ Indiana Department of Transportation (14 January 2014). Intersection Decision Guide (PDF). Indiana Department of Transportation. p. 43. Retrieved 8 May 2016.
- ^ Transportation Research Board (2010). National Cooperative Highway Research Program (NCHRP) Report 650: Median Intersection Design for Rural High-Speed Divided Highways (PDF). Transportation Research Board. pp. 92–99. doc. P. 84–91.
- ^ Federal Highway Administration (July 2008). Intersection Safety Strategies Brochure (PDF). Federal Highway Administration. FHWA-SA-08-008. Archived from the original (PDF) on March 19, 2021. Retrieved 8 May 2016.
- ^ Institute of Transportation Engineers. Convert Two Offset T-Intersections to a Single Four-Legged Intersection (PDF). Institute of Transportation Engineers. Archived from the original (PDF) on 10 May 2016. Retrieved 8 May 2016.
- ^ Institut für Straßen- und Eisenbahnwesen am KIT. Entwurf und Bau von Straßen – Teil: Straßenentwurf (PDF) (in German). Institut für Straßen- und Eisenbahnwesen am KIT. pp. SE–5–18 –20. Retrieved 7 September 2013.