3-way junction

3-way junction

A 3-way junction (or 3-way intersection) is a type of road junction with three arms. A Y junction (or Y intersection) generally has 3 arms of equal size. A T junction (or T intersection) also has 3 arms, but one of the arms is generally a minor road connecting to larger road.

Some T junctions are controlled by traffic lights, but others rely upon drivers to obey right-of-way rules. For example, a vehicle travelling on the major roads of the "T" typically has right-of-way, meaning that the vehicle approaching the "major" road must allow it to pass before joining the flow of traffic.

An experiment was done in Illinois, United States to allow going straight on red (like a right turn on red) when approaching a T junction on the main road, with the intersecting road on the left. It was a failure. However, at some T junctions where the main road includes at least two lanes on the side away from the intersecting road, the farthest (rightmost, in areas where traffic drives to the right) lane is given the right of way to proceed straight through the intersection at all times, denoted by a "green arrow" signal if a traffic light is installed at the intersection. In such cases, often that lane is also specially delimited with pavement markings or other lane separation devices, to keep left-turning traffic on the intersecting road from colliding with traffic proceeding through the intersection on the main road. There are now safer variations of this, called Continuous T-intersections, that have a left-exit off of the main road to completely separate those going straight, which allows for a traffic signal on only one side of the road. [An Applied Technology and Traffic Analysis Program ( [http://attap.umd.edu/UAID.php?UAIDType=6&Submit=Submit&iFeature=1] )]

In the People's Republic of China, going straight on red when approaching a T junction on the main road with the intersecting road on the left was permitted until outlawed by the Road Traffic Safety Law of the People's Republic of China effective on 1 May 2004.

In Taiwan administered by the Republic of China, when at least two vehicles reach a T intersection without a working traffic light, the vehicle on the side road is to yield to any other vehicle straight on the main road. If two vehicles want to turn left, the vehicle on the left is to yield. [Clause 2 of Section 1 of Article 102 of the Road Traffic Security Rules ()]

Image Gallery

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • junction — junction, confluence, concourse are comparable when meaning the act, state, or place of meeting or uniting. Junction, the most general of these words, applies to the meeting or uniting usually of material things (as roads, rivers, lines, or… …   New Dictionary of Synonyms

  • Junction (road) — A road junction is a location where vehicular traffic going in different directions can proceed in a controlled manner designed to minimize accidents. In some cases, vehicles can change between different routes or directions of… …   Wikipedia

  • Junction Canal — The Junction Canal was a canal in the states of New York and Pennsylvania in the USA. The canal was also called the Arnot Canal, after the name of its principal stockholder, John Arnot of Elmira, New York. The canal was built and operated by a… …   Wikipedia

  • junction — Synonyms and related words: Anschluss, L, abutment, abuttal, access, accession, accompaniment, accord, accordance, accretion, addition, adherence, adhesion, adjacency, adjoiningness, adjunct, adjunction, affairs, affiliation, affinity, affixation …   Moby Thesaurus

  • All-way stop — An all way stop is an intersection system used predominantly in the United States of America, Canada and South Africa where traffic approaching it from all directions is required to stop before proceeding through the intersection. Such… …   Wikipedia

  • Flying junction — A flying junction is a railway junction at which one or more diverging or converging tracks in a multiple track route cross other tracks on the route by bridge to avoid conflict with other train movements. A more technical term is grade separated …   Wikipedia

  • Box junction — A box junction at a busy intersection at Avenida Paulista, in São Paulo, Brazil …   Wikipedia

  • Raes Junction — in New Zealand is located at the intersection of State Highways 8 and 90, in the lower South Island. The highways which meet at the junction are the main routes to the Clutha valley for travellers from Dunedin and Invercargill respectively.Raes… …   Wikipedia

  • Y junction — may refer to one of several things. * A 3 way junction where three roads meet. * A Wye (railroad) junction that takes the form of a triangle of railway lines …   Wikipedia

  • Mancunian Way — A57(M) motorway Mancunian Way Route information Length: 2.0 mi (3.2 km) …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”