Offset T-intersection

Offset T-Intersection

An Offset T-Intersection^[1] is an at-grade road intersection where conventional four leg intersection is being splitup 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 unsingalized 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]

See also

• Split intersection
• Hamburger intersection (Throughabout)

References

1. Federal Highway Administration (FWHA): Alternative Intersections/Interchanges: Informational Report (AIIR), Chapter 6.3.4, publication number FHWA-HRT-09-060, April 2010, retrieved May 2016
2. Indiana Department of Transportation (INDOT): Intersection Decision Guide, 14 January 2014, retrieved Mai 2016, P. 43
3. Transportation Research Board: NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM (NCHRP) REPORT 650: Median Intersection Design for Rural High-Speed Divided Highways, 2010, PDF P. 92–99 (doc. P. 84–91)
4. Federal Highway Administration (FWHA): Intersection Safety Strategies Brochure, publication number FHWA-SA-08-008, July 2008, retrieved May 2016
5. Institute of Transportation Engineers: Convert Two Offset T-Intersections to a Single Four-Legged Intersection, retrieved May 2016