Intersection (road)

An intersection is the junction at-grade (that is to say, on the same level) of two or more roads either meeting or crossing. An intersection may be three-way (a T junction or Y junction – the latter also known as a fork if approached from the stem of the Y), four-way (often in the form of a crossroads), or have five (a 5-points) or more arms. Busy intersections are often controlled by traffic lights and/or a roundabout.

This article primarily reflects practice in jurisdictions where vehicles are driven on the right. If not otherwise specified, "right" and "left" can be reversed to reflect jurisdictions where vehicles are driven on the left.

Types of intersections

Road segments

One way to classify intersections is by the number of road segments (arms) that are involved.

Intersection (novel)

Intersections is a 1967 novel by the French writer Paul Guimard. Its French title is Les Choses de la vie, which means "the things of life". It tells the story of a lawyer who has a serious car accident and lies in bed at a hospital, where he is unable to communicate but hears the people around him, as he remembers his life up until the accident. The book was published in English in 1994, translated by Shaun Whiteside. It received the Prix des libraires in 1968.

Adaptations

The novel was the basis for Claude Sautet's 1970 film The Things of Life, starring Romy Schneider and Michel Piccoli. Sautet's film was remade in the United States as Intersection, released in 1994.

References

Intersection (set theory)

In mathematics, the intersection A ∩ B of two sets A and B is the set that contains all elements of A that also belong to B (or equivalently, all elements of B that also belong to A), but no other elements.

For explanation of the symbols used in this article, refer to the table of mathematical symbols.

Basic definition

The intersection of A and B is written "A ∩ B". Formally:

that is

For example:

More generally, one can take the intersection of several sets at once. The intersection of A, B, C, and D, for example, is A ∩ B ∩ C ∩ D = A ∩ (B ∩ (C ∩ D)). Intersection is an associative operation; thus,
A ∩ (B ∩ C) = (A ∩ B) ∩ C.

Inside a universe U one may define the complement A^c of A to be the set of all elements of U not in A. Now the intersection of A and B may be written as the complement of the union of their complements, derived easily from De Morgan's laws:
A ∩ B = (A^c ∪ B^c)^c

Intersection (sculpture)

Intersection is an outdoor 2015 steel sculpture by Matthew Passmore, installed at the Clinton St/SE 12th Ave MAX Station in Portland, Oregon's Hosford-Abernethy neighborhood, in the United States. The piece is made of repurposed freight rail and, according to TriMet, "references the historic impact of transportation infrastructure on the neighborhood".

See also

References

List of highways numbered 981

A List of highways numbered 981:

Canada

Saskatchewan Highway 981, a provincial highway in the east central region of the Canadian province of Saskatchewan

United States

Louisiana Highway 981 (LA 981), a state highway in Louisiana that serves Pointe Coupee Parish

Pennsylvania Route 981 (PA 981), a state highway which runs across Westmoreland County

309 Road

The 309 road is a 22-kilometre (14 mi) long gravel road between the towns of Coromandel and Whitianga in New Zealand.

The 309 winds its way from Coromandel, on the west side of the Coromandel Peninsula, over the ranges to Whitianga, on the eastern side.

The road is considered extremely dangerous and deaths among tourists unfamiliar with the road and in unfit vehicles are common.

Places of interest along the road include Waiau Falls and the Kauri Grove, a stand of mature kauri trees.

Location

References

External links

Coordinates: 36°50′48″S 175°33′15″E / 36.846767°S 175.554208°E / -36.846767; 175.554208 (309 Road - nominal location)

List of highways numbered 44

The following highways are numbered 44.

Canada

Ontario Highway 44

India

National Highway 44 (India)

Israel

Iran

Road 44

Japan

Route 44 (Japan)

New Zealand

New Zealand State Highway 44

Thailand

Thailand Route 44

United Arab Emirates

E 44

United Kingdom

British A44 (Oxford-Aberystwyth)

United States

Interstate 44

U.S. Route 44

Alabama State Route 44

California State Route 44

Colorado State Highway 44

Delaware Route 44

Florida State Road 44

Georgia State Route 44

Hawaii Route 44

Idaho State Highway 44

Illinois Route 44 (former)

Indiana State Road 44

Iowa Highway 44

K-44 (Kansas highway)

Kentucky Route 44

Louisiana Highway 44

Maryland Route 44 (former)

M-44 (Michigan highway)

Minnesota State Highway 44

Mississippi Highway 44

Montana Highway 44

Nebraska Highway 44

Nevada State Route 44 (former)

New Jersey Route 44

New York State Route 44 (former)

• New York State Route 44A (former)