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  2. Stack interchange - Wikipedia

    en.wikipedia.org/wiki/Stack_interchange

    The High Five Interchange in Dallas, Texas. A directional interchange, colloquially known as a stack interchange, is a type of grade-separated junction between two controlled-access highways that allows for free-flowing movement to and from all directions of traffic.

  3. Interchange (road) - Wikipedia

    en.wikipedia.org/wiki/Interchange_(road)

    The High Five in Dallas, Texas.This is a complicated five-level stack interchange, due to the proximity of frontage roads and segregated high-occupancy vehicle lanes.This hybrid design is based on parts of a four-level stack for highways, with a three-level-diamond interchange to handle the frontage roads.

  4. Glossary of road transport terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_road_transport...

    See three-way junction 5-1-1 A transportation and traffic information telephone hotline in some regions of the United States and Canada that was initially designated for road weather information. A Access road See frontage road Advisory speed limit A speed recommendation by a governing body. All-way stop or four-way stop An intersection system where traffic approaching it from all directions ...

  5. Overpass - Wikipedia

    en.wikipedia.org/wiki/Overpass

    An overpass, called an overbridge or flyover (for a road only) in the United Kingdom and some other Commonwealth countries, is a bridge, road, railway or similar structure that is over another road or railway. An overpass and underpass together form a grade separation. [1] Stack interchanges are made up of several overpasses.

  6. Geometric design of roads - Wikipedia

    en.wikipedia.org/wiki/Geometric_design_of_roads

    Uncontrolled and yield (give way) controlled intersections require large sight triangles clear of obstructions in order to operate safely. At uncontrolled intersections, the basic right-of-way rules apply (either yield to the vehicle on the right, or the boulevard rule, depending on the location). Vehicle drivers must be able to see traffic ...

  7. Intersection (road) - Wikipedia

    en.wikipedia.org/wiki/Intersection_(road)

    A three-way intersection is a junction between three road segments (arms): a T junction when two arms form one road, or a Y junction, the latter also known as a fork if approached from the stem of the Y. Fork in the road Y-junction. A four-way intersection, or crossroads, usually involves a

  8. Four Level Interchange - Wikipedia

    en.wikipedia.org/wiki/Four_Level_Interchange

    The Four Level Interchange (officially the Bill Keene Memorial Interchange) is the first stack interchange in the world. [1] Completed in 1949 and fully opened in 1953 at the northern edge of Downtown Los Angeles, California, United States, it connects U.S. Route 101 (Hollywood Freeway and Santa Ana Freeway) to State Route 110 (Harbor Freeway and Arroyo Seco Parkway).

  9. Partial cloverleaf interchange - Wikipedia

    en.wikipedia.org/wiki/Partial_cloverleaf_interchange

    The eastbound directional onramp is located further south of the overpass and is not pictured. The junction of Saskatchewan Highway 1 (east-west), Saskatchewan Highway 39 (south, part of the CanAm route) and Saskatchewan Highway 301 (north) is an A4 parclo. Highway 1 serves as the freeway, while Highway 39/301 is the arterial road.