Highway

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The term highway includes any public road. This is an unpaved highway in Northern England. High Peak Trail - geograph.org.uk - 106306.jpg
The term highway includes any public road. This is an unpaved highway in Northern England.
An Autobahn in Lehrte, near Hanover, Germany--a busy, high-capacity motorway. Blick auf A 2 bei Raststatte Lehrter See (2009).jpg
An Autobahn in Lehrte, near Hanover, Germany—a busy, high-capacity motorway.
The Evitamiento Highway, in Lima, Peru. Highway Evitamiento.png
The Evitamiento Highway, in Lima, Peru.
Ontario Highway 401, in Ontario, Canada 401 Gridlock.jpg
Ontario Highway 401, in Ontario, Canada
The I-75/I-85 Downtown Connector in Atlanta, Georgia, in the United States Atlanta 75.85.jpg
The I-75/I-85 Downtown Connector in Atlanta, Georgia, in the United States
Typical Ukrainian highway sign (M22) M22-UA.svg
Typical Ukrainian highway sign (M22)
Cyclists on Highway M-185 in the US state of Michigan M-185 Biking near Mile Marker1.jpg
Cyclists on Highway M-185 in the US state of Michigan
The Pan-American Highway in the Greater Buenos Aires, Argentina Ruta Panamericana Buenos Aires Florida.jpg
The Pan-American Highway in the Greater Buenos Aires, Argentina
King Faisal Highway, Manama, Bahrain Road and towers in Manama.jpg
King Faisal Highway, Manama, Bahrain
Highway near Bangalore, India NH 73 from Bangalore.JPG
Highway near Bangalore, India
Delhi Noida Flyway in India Delhi Noida Direct flyway (Uttar Pradesh - 2011-06-18).jpg
Delhi Noida Flyway in India
Ayalon Highway, Israel Ayalon22.jpg
Ayalon Highway, Israel
The Dukhan Highway going between Doha and Dukhan, in Qatar Qatar, Dukhan Highway.JPG
The Dukhan Highway going between Doha and Dukhan, in Qatar

A highway is any public or private road or other public way on land. It is used for major roads, but also includes other public roads and public tracks: It is not an equivalent term to controlled-access highway, or a translation for autobahn , autoroute , etc.

Contents

According to Merriam Webster, the use of the term predates the 12th century. According to Etymonline, "high" is in the sense of "main".

In North American and Australian English, major roads such as controlled-access highways or arterial roads are often state highways (Canada: provincial highways). Other roads may be designated "county highways" in the US and Ontario. These classifications refer to the level of government (state, provincial, county) that maintains the roadway.

In British English, "highway" is primarily a legal term. Everyday use normally implies roads, while the legal use covers any route or path with a public right of access, including footpaths etc.

The term has led to several related derived terms, including highway system, highway code, highway patrol and highwayman.

Overview

Major highways are often named and numbered by the governments that typically develop and maintain them. Australia's Highway 1 is the longest national highway in the world at over 14,500 kilometres (9,000 mi) and runs almost the entire way around the continent. China has the world's largest network of highways followed closely by the United States of America. Some highways, like the Pan-American Highway or the European routes, span multiple countries. Some major highway routes include ferry services, such as US Route 10, which crosses Lake Michigan.

Traditionally highways were used by people on foot or on horses. Later they also accommodated carriages, bicycles and eventually motor cars, facilitated by advancements in road construction. In the 1920s and 1930s, many nations began investing heavily in progressively more modern highway systems to spur commerce and bolster national defense.

Major modern highways that connect cities in populous developed and developing countries usually incorporate features intended to enhance the road's capacity, efficiency, and safety to various degrees. Such features include a reduction in the number of locations for user access, the use of dual carriageways with two or more lanes on each carriageway, and grade-separated junctions with other roads and modes of transport. These features are typically present on highways built as motorways ( freeways ).

Terminology

England and Wales

The general legal definition deals with right of use not the form of construction; this is distinct from e.g. the popular use of the word in the US. A highway is defined in English common law by a number of similarly-worded definitions such as "a way over which all members of the public have the right to pass and repass without hindrance" [1] usually accompanied by "at all times"; ownership of the ground is for most purposes irrelevant thus the term encompasses all such ways from the widest trunk roads in public ownership to the narrowest footpath providing unlimited pedestrian access over private land.

A highway might be open to all forms of lawful land traffic (i.e. vehicular, horse, pedestrian) or limited to specific types of traffic or combinations of types of traffic; usually a highway available to vehicles is available to foot or horse traffic, a highway available to horse traffic is available to pedestrians but exceptions can apply usually in the form of a highway only being available to vehicles or subdivided into dedicated parallel sections for different users.

A highway can share ground with a private right of way for which full use is not available to the general public as often will be the case with farm roads which the owner may use for any purpose but for which the general public only has a right of use on foot or horseback. The status of highway on most older roads has been gained by established public use while newer roads are typically dedicated as highways from the time they are adopted (taken into the care and control of a council or other public authority). In England and Wales, a public highway is also known as "The Queen's Highway". [2]

The core definition of a highway is modified in various legislation for a number of purposes but only for the specific matters dealt with in each such piece of legislation. This is typically in the case of bridges, tunnels and other structures whose ownership, mode of use or availability would otherwise exclude them from the general definition of a highway, examples in recent years are commonly toll bridges and tunnels which have the definition of highway imposed upon them (in a legal order applying only to the individual structure) to allow application of most traffic laws to those using them but without causing all of the general obligations or rights of use otherwise applicable to a highway.

Scotland

Scots law is similar to English law with regard to highways but with differing terminology and legislation. What is defined in England as a highway will often in Scotland be what is defined by s.151 Roads (Scotland) Act 1984 (but only "in this act" although other legislation could imitate) simply as a road, that is :-

The word highway is itself no longer a statutory expression in Scots law [3] but remains in common law.

United States

In American law, the word "highway" is sometimes used to denote any public way used for travel, whether a "road, street, and parkway"; [4] however, in practical and useful meaning, a "highway" is a major and significant, well-constructed road that is capable of carrying reasonably heavy to extremely heavy traffic.[ citation needed ] Highways generally have a route number designated by the state and federal departments of transportation.[ clarification needed ]

California Vehicle Code, Sections 360, 590, define a "highway" as only a way open for use of motor vehicles, but the California Supreme Court has held that "the definition of 'highway' in the Vehicle Code is used for special purposes of that act," and that canals of the Los Angeles neighborhood of Venice, California, are "highways" that are entitled to be maintained with state highway funds. [5]

Smaller roads may be termed byways. [6]

History

A German Autobahn in the 1930s. German Autobahn 1936 1939.jpg
A German Autobahn in the 1930s.

Modern highway systems developed in the 20th century as the automobile gained popularity. The world's first limited access road was constructed on Long Island New York in the United States known as the Long Island Motor Parkway or the Vanderbilt Motor Parkway. It was completed in 1911. [7]

In Italy the Milano-Varese 49-kilometre-long (30 mi) autostrada was opened in 1924.

Construction of the Bonn–Cologne autobahn began in 1929 and it was opened in 1932 by the mayor of Cologne, Konrad Adenauer. [8]

In the US, the Federal Aid Highway Act of 1921 (Phipps Act) enacted a fund to create an extensive highway system. In 1922, the first blueprint for a national highway system (the Pershing Map) was published. The Federal Aid Highway Act of 1956 allocated $25 billion for the construction of the 66,000-kilometre-long (41,000 mi) Interstate Highway System over a 20-year period. [9]

In Great Britain, the Special Roads Act 1949 provided the legislative basis for roads for restricted classes of vehicles and non-standard or no speed limits applied (later mostly termed motorways but now with speed limits not exceeding 70 mph); [10] in terms of general road law this legislation overturned the usual principle that a road available to vehicular traffic was also available to horse or pedestrian traffic as is usually the only practical change when non-motorways are reclassified as special roads. The first section of motorway in the UK opened in 1958 (part of the M6 motorway) and then in 1959 the first section of the M1 motorway. [11]

Social effects

Commonwealth Avenue, a major intercity highway in northeastern Manila metropolitan area, the Philippines. QuezonCityjf2902 03.JPG
Commonwealth Avenue, a major intercity highway in northeastern Manila metropolitan area, the Philippines.

Reducing travel times relative to city or town streets, modern highways with limited access and grade separation create increased opportunities for people to travel for business, trade or pleasure and also provide trade routes for goods. Modern highways reduce commute and other travel time but additional road capacity can also release latent traffic demand. If not accurately predicted at the planning stage, this extra traffic may lead to the new road becoming congested sooner than would otherwise be anticipated by considering increases in vehicle ownership. More roads allow drivers to use their cars when otherwise alternatives may have been sought, or the journey may not have been made, which can mean that a new road brings only short-term mitigation of traffic congestion.

Where highways are created through existing communities, there can be reduced community cohesion and more difficult local access. Consequently, property values have decreased in many cutoff neighborhoods, leading to decreased housing quality over time.

Economic effects

In transport, demand can be measured in numbers of journeys made or in total distance travelled across all journeys (e.g. passenger-kilometres for public transport or vehicle-kilometres of travel (VKT) for private transport). Supply is considered to be a measure of capacity. The price of the good (travel) is measured using the generalised cost of travel, which includes both money and time expenditure.

A taxiway crossing the Autobahn, near Leipzig Leipzig-Halle Airport Condor.jpg
A taxiway crossing the Autobahn, near Leipzig

The effect of increases in supply (capacity) are of particular interest in transport economics (see induced demand), as the potential environmental consequences are significant (see externalities below).

In addition to providing benefits to their users, transport networks impose both positive and negative externalities on non-users. The consideration of these externalities—particularly the negative ones—is a part of transport economics. Positive externalities of transport networks may include the ability to provide emergency services, increases in land value and agglomeration benefits. Negative externalities are wide-ranging and may include local air pollution, noise pollution, light pollution, safety hazards, community severance and congestion. The contribution of transport systems to potentially hazardous climate change is a significant negative externality which is difficult to evaluate quantitatively, making it difficult (but not impossible) to include in transport economics-based research and analysis. Congestion is considered a negative externality by economists. [12]

A 2016 study finds that for the United States "a 10% increase in a region's stock of highways causes a 1.7% increase in regional patenting over a five-year period." [13]

Environmental effects

Noise, light and air pollution are negative environmental effects highways can have on their surroundings. Highway 401 by 401-DVP.jpg
Noise, light and air pollution are negative environmental effects highways can have on their surroundings.

Highways are extended linear sources of pollution.

Roadway noise increases with operating speed so major highways generate more noise than arterial streets. Therefore, considerable noise health effects are expected from highway systems. Noise mitigation strategies exist to reduce sound levels at nearby sensitive receptors. The idea that highway design could be influenced by acoustical engineering considerations first arose about 1973. [14] [15]

Air quality issues: Highways may contribute fewer emissions than arterials carrying the same vehicle volumes. This is because high, constant-speed operation creates an emissions reduction compared to vehicular flows with stops and starts. However, concentrations of air pollutants near highways may be higher due to increased traffic volumes. Therefore, the risk of exposure to elevated levels of air pollutants from a highway may be considerable, and further magnified when highways have traffic congestion.

New highways can also cause habitat fragmentation, encourage urban sprawl and allow human intrusion into previously untouched areas, as well as (counterintuitively) increasing congestion, by increasing the number of intersections.

They can also reduce the use of public transport, indirectly leading to greater pollution.

High-occupancy vehicle lanes are being added to some newer/reconstructed highways in North America and other countries around the world to encourage carpooling and mass-transit. These lanes help reduce the number of cars on the highway and thus reduces pollution and traffic congestion by promoting the use of carpooling in order to be able to use these lanes. However, they tend to require dedicated lanes on a highway, which makes them difficult to construct in dense urban areas where they are the most effective.

To address habitat fragmentation, wildlife crossings have become increasingly popular in many countries. Wildlife crossings allow animals to safely cross human-made barriers like highways. [16]

Road traffic safety

Road traffic safety describes the safety performance of roads and streets, and methods used to reduce the harm (deaths, injuries, and property damage) on the highway system from traffic collisions. It includes the design, construction and regulation of the roads, the vehicles used on them and the training of drivers and other road-users.

A report published by the World Health Organization in 2004 estimated that some 1.2m people were killed and 50m injured on the roads around the world each year [17] and was the leading cause of death among children 10–19 years of age.

The report also noted that the problem was most severe in developing countries and that simple prevention measures could halve the number of deaths. [18] For reasons of clear data collection, only harm involving a road vehicle is included. [19] A person tripping with fatal consequences or dying for some unrelated reason on a public road is not included in the relevant statistics.

Statistics

International sign used widely in Europe denoting the start of special restrictions for a section of highway classed as a motorway. Autoroute F.svg
International sign used widely in Europe denoting the start of special restrictions for a section of highway classed as a motorway.
Russian Federal M8 highway sign. M8-RUS.svg
Russian Federal M8 highway sign.
The Cross Bronx Expressway in New York, United States uses asphalt and concrete pavement, both of which are popular road surfaces on highways. CBX Parkchester 6 jeh.JPG
The Cross Bronx Expressway in New York, United States uses asphalt and concrete pavement, both of which are popular road surfaces on highways.

The United States has the world's largest network of highways, including both the Interstate Highway System and the United States Numbered Highway System. At least one of these networks is present in every state and they interconnect most major cities.

China's highway network is the second most extensive in the world, with a total length of about 3,573,000 kilometres (2,220,000 mi). [20] [21] [22] [23] [24] China's expressway network is the longest Expressway system in the world, and it is quickly expanding, stretching some 85,000 kilometres (53,000 mi) at the end of 2011. [25] [26] In 2008 alone, 6,433 kilometres (3,997 mi) expressways were added to the network. [27]

Longest international highway
The Pan-American Highway, which connects many countries in the Americas, is nearly 25,000 kilometres (15,500 mi) long as of 2005.[ citation needed ] The Pan-American Highway is discontinuous because there is a significant gap in it in southeastern Panama, where the rainfall is immense and the terrain is entirely unsuitable for highway construction.
Longest national highway (point to point)
The Trans-Canada Highway has one main route, a northern route through the western provinces, and several branches in the central and eastern provinces. The main route is 7,821 kilometres (4,860 mi) long as of 2006 alone, and the entire system is over 10,700 kilometres (6,600 mi) long. The TCH runs east-west across southern Canada, the populated portion of the country, and it connects many of the major urban centres along its route crossing all provinces, and reaching nearly all of their capital cities. [28] The TCH begins on the east coast in Newfoundland, traverses that island, and crosses to the mainland by ferry. It crosses the Maritime Provinces of eastern Canada with a branch route serving the province of Prince Edward Island via a ferry and bridge. After crossing the remainder of the country's mainland, the highway reaches Vancouver, British Columbia on the Pacific coast, where a ferry continues it to Vancouver Island and the provincial capital of Victoria. Numeric designation is the responsibility of the provinces, and there is no single route number across the country.
Longest national highway (circuit)
Australia's Highway 1 at over 14,500 kilometres (9,000 mi).[ citation needed ] It runs almost the entire way around the continent's coastline. With the exception of the Federal Capital of Canberra, which is far inland, Highway 1 links all of Australia's capital cities, although Brisbane and Darwin are not directly connected, but rather are bypassed short distances away. Also, there is a ferry connection to the island state of Tasmania, and then a stretch of Highway 1 that links the major towns and cities of Tasmania, including Launceston and Hobart (this state's capital city).
Largest national highway system
The United States of America has approximately 6.43 million kilometres (4,000,000 mi) of highway within its borders as of 2008. [29]
Busiest highway
Highway 401 in Ontario, Canada, has volumes surpassing an average of 500,000 vehicles per day in some sections of Toronto as of 2006. [30] [31]
Widest highway (maximum number of lanes)
The Katy Freeway (part of Interstate 10) in Houston, Texas, has a total of 26 lanes in some sections as of 2007.[ citation needed ] [32] However, they are divided up into general use/ frontage roads/ HOV lanes, restricting the traverse traffic flow.
Widest highway (maximum number of through lanes)
Interstate 5 along a 3.2-kilometre-long (2 mi) section between Interstate 805 and California State Route 56 in San Diego, California, which was completed in April 2007, is 22 lanes wide. [33]
Highest international highway
The Karakoram Highway, between Pakistan and China, is at an altitude of 4,693 metres (15,397 ft).[ citation needed ]

Bus lane

Highway bus lane on Gyeongbu Expressway in South Korea. Gyeongbu Expressway Bus Only Lane.JPG
Highway bus lane on Gyeongbu Expressway in South Korea.

Some countries incorporate bus lanes onto highways.

CountryHighwayBus lanes (km)Section
Australia M2 Hills Motorway Abbott Road–Beecroft Road (Sydney)
India National Highway (India) 1930 lanes Road

(Mumbai)

Canada Don Valley Parkway 0.458shoulder converted as bypass lane from Lawrence Avenue East to York Mills Road
Canada Ontario Highway 417 7Eagleson Road–Ontario Highway 417 (Ottawa)
Canada Ontario Highway 403 6Mavis Road–Winston Churchill Boulevard (Mississauga)
Hong Kong Tuen Mun Road
South Korea Gyeongbu Expressway 137.4Hannam IC (Seoul) ~ Sintanjin IC (Daejeon)
Netherlands A1 motorway (Netherlands) End of A6-Vechtbrug (Muiden)

South Korea

In South Korea, in February 1995 a bus lane (essentially an HOV-9) was established between the northern terminus and Sintanjin for important holidays and on 1 July 2008 bus lane enforcement between Seoul and Osan (Sintanjin on weekends) became daily between 6 a.m. and 10 p.m. On 1 October this was adjusted to 7 a.m. to 9 p.m. weekdays, and 9 a.m. to 9 p.m. weekends.

Hong Kong

In Hong Kong, some highways are set up with bus lanes to solve the traffic congestion.

DistrictHighwaySection
Tuen Mun HK Route9.svg Tuen Mun Road So Kwun Wat to Sham Tseng
Sha Tin HK Route1.svg Lion Rock Tunnel The entry of the tunnel

Philippines

Traffic congestion was a principal problem in major roads and highways in the Philippines, especially in Metro Manila and other major cities. The government decided to set up some bus lanes in Metro Manila like in the Epifanio delos Santos Avenue.

See also

General

By country

Related Research Articles

Ramp meter Traffic management system

A ramp meter, ramp signal, or metering light is a device, usually a basic traffic light or a two-section signal light together with a signal controller, that regulates the flow of traffic entering freeways according to current traffic conditions. Ramp meters are used at freeway on-ramps to manage the rate of automobiles entering the freeway. Ramp metering systems have proved to be successful in decreasing traffic congestion and improving driver safety.

Traffic congestion condition on road networks that occurs as use increases, and is characterized by slower speeds, longer trip times, and increased vehicular queueing

Traffic congestion is a condition on transport that is characterised by slower speeds, longer trip times, and increased vehicular queueing. Traffic congestion on urban road networks has become increasingly problematic since the 1950s. When traffic demand is great enough that the interaction between vehicles slows the speed of the traffic stream, this results in some congestion. While congestion is a possibility for any mode of transportation, this article will focus on automobile congestion on public roads.

Exit number Number assigned to a road junction

An exit number is a number assigned to a road junction, usually an exit from a freeway. It is usually marked on the same sign as the destinations of the exit. In some countries, such as the United States, it is also marked on a sign in the gore.

Variable-message sign Electronic traffic sign with changeable messages

A variable-message sign, often abbreviated VMS, CMS, or DMS, and in the UK known as a matrix sign, is an electronic traffic sign often used on roadways to give travellers information about special events. Such signs warn of traffic congestion, accidents, incidents such as terrorist attacks, AMBER/Silver/Blue Alerts, roadwork zones, or speed limits on a specific highway segment. In urban areas, VMS are used within parking guidance and information systems to guide drivers to available car parking spaces. They may also ask vehicles to take alternative routes, limit travel speed, warn of duration and location of the incidents, or just inform of the traffic conditions.

Frontage road Type of road

A frontage road is a local road running parallel to a higher-speed, limited-access road. A frontage road is often used to provide access to private driveways, shops, houses, industries or farms. Where parallel high-speed roads are provided as part of a major highway, these are also known as local-express lanes.

Dual carriageway type of road

A dual carriageway can also be classified as a motorway traffic travelling in opposite directions separated by a central reservation. Roads with two or more carriageways which are designed to higher standards with controlled access are generally classed as motorways, freeways, etc., rather than dual carriageways.

A decommissioned highway is a highway that has been removed from service by being shut down, or has had its authorization as a national, provincial or state highway removed. Decommissioning can include the complete or partial demolition or abandonment of an old highway structure because the old roadway has lost its utility, but such is not always the norm. Where the old highway has continuing value, it likely remains as a local road offering access to properties denied access to the new road or for use by slow vehicles such as farm equipment and horse-drawn vehicles denied use of the newer highway.

Ontario Highway 427 Highway in Ontario

King's Highway 427, also known as Highway 427 and colloquially as the 427, is a 400-series highway in the Canadian province of Ontario that connects the Queen Elizabeth Way (QEW) and Gardiner Expressway in Toronto to Highway 401 and with York Regional Road 7 further north in the City of Vaughan. An arterial extension, known as York Regional Road 99, continues 800 metres (2,600 ft) north to Zenway Boulevard. It is Ontario's second busiest freeway by volume and third busiest in North America, behind Highway 401 and Interstate 405 in California. Like Highway 401, a portion of the route is divided into a collector-express system with twelve to fourteen continuous lanes. Notable about Highway 427 are its several multi-level interchanges; the junctions with the QEW/Gardiner Expressway and Highway 401 are two of the largest interchanges in Ontario and were constructed between 1967 and 1971, while the interchanges with Highway 409 and Highway 407 were completed in 1992 and 1995, respectively.

Median strip the reserved area that separates opposing lanes of traffic on divided roadways

The median strip or central reservation is the reserved area that separates opposing lanes of traffic on divided roadways, such as divided highways, dual carriageways, freeways, and motorways. The term also applies to divided roadways other than highways, such as some major streets in urban or suburban areas. The reserved area may simply be paved, but commonly it is adapted to other functions; for example, it may accommodate decorative landscaping, trees, a median barrier or railway, rapid transit, light rail or streetcar lines.

Limited-access road high-speed road with many characteristics of a controlled-access highway (freeway or motorway)

A limited-access road, known by various terms worldwide, including limited-access highway, dual-carriageway, expressway, and partial controlled access highway, is a highway or arterial road for high-speed traffic which has many or most characteristics of a controlled-access highway, including limited or no access to adjacent property, some degree of separation of opposing traffic flow, use of grade separated interchanges to some extent, prohibition of some modes of transport such as cars, bicycles or horses, and very few or no intersecting cross-streets. The degree of isolation from local traffic allowed varies between countries and regions. The precise definition of these terms varies by jurisdiction.

Local–express lanes

The local–express lane system is an arrangement of carriageways within a major highway where long distance traffic can use lanes with fewer interchanges compared to local traffic which use 'local' or 'collector' lanes that have access to all interchanges. This can also be called a collector–distributor lane within a single interchange. One of the longest examples is Highway 401 in Toronto. Where highway ramps between express and local/collector lanes cross over one another this is commonly known as braided ramps.

Non-motorized access on freeways

Non-motorized access on freeways may allow or restrict pedestrians, bicyclists and other non-motorized traffic to use a freeway. Such roads are public ways intended primarily for high-speed travel over long distances, and they have resulted in highways in the United States with engineering features such as long sight-distances, wide marked lanes and the absence of cross traffic. These provide faster and safer travel.

Controlled-access highway Highway designed exclusively for high-speed vehicular traffic, with all traffic flow and ingress/egress regulated

A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow ingress- and egress-regulated. Common English terms are freeway, motorway and expressway. Other similar terms include Interstate and throughway and parkway. Some of these may be limited-access highways, although this term can also refer to a class of highway with somewhat less isolation from other traffic.

Open road tolling

Open road tolling (ORT), also called cashless tolling or free-flow tolling, is the collection of tolls on toll roads without the use of toll booths. An electronic toll collection system is usually used instead. The major advantage to ORT is that users are able to drive through the toll plaza at highway speeds without having to slow down to pay the toll. In some installations, ORT may also reduce congestion at the plazas by allowing more vehicles per hour/per lane. The disadvantage to ORT is the possibility of "leakage"; that is, "violators" who do not pay. Leakage may either be written off as an expense by the toll operator, or offset in part or whole by fees and fines collected against the violators.

Pacific Motorway (Sydney–Newcastle) motorway in New South Wales

The M1 Pacific Motorway, also known by the former names F3 Freeway, Sydney–Newcastle Freeway, and Sydney–Newcastle Expressway; is a 127 km (79 mi) stretch of freeway linking Sydney to the Central Coast, Newcastle and Hunter regions of New South Wales. It is part of the AusLink road corridor between Sydney and Brisbane. The name "F3 Freeway", reflects its former route allocation, but is commonly used by both the public and the government to refer to the roadway long after the route allocation itself was no longer in use.

Two-lane expressway Article collection to the topic "two-lane expressways" (Limited-access road of a specific country)

A two-lane expressway or two-lane freeway is an expressway or freeway with only one lane in each direction, and usually no median barrier. It may be built that way because of constraints, or may be intended for expansion once traffic volumes rise. The term super two is often used by roadgeeks for this type of road, but traffic engineers use that term for a high-quality surface road. Most of these roads are not tolled.

Unused highway Roads where either unused/no longer used, or closed due to some reasons

An unused highway is a highway or highway ramp that was partially or fully constructed, but went unused or was later closed. An unused roadway or ramp may often be referred to as a ghost road, highway to nowhere, stub ramp, ghost ramp, ski jump, stub street, stub-out, or simply stub.

This article describes the highway systems available in selected countries.

Glossary of road transport terms Wikimedia list article

Terminology related to road transport—the transport of passengers or goods on paved routes between places—is diverse, with variation between dialects of English. There may also be regional differences within a single country, and some terms differ based on the side of the road traffic drives on. This glossary is an alphabetical listing of road transport terms.

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  30. Ministry of Transportation (Ontario) (6 August 2002). "Ontario government investing $401 million to upgrade Highway 401". Archived from the original on 14 September 2007. Retrieved 20 December 2006.
  31. Gray, Brian (10 April 2004). "GTA Economy Dinged by Every Crash on the 401: North America's Busiest Freeway". Toronto Sun . Retrieved 18 March 2007 via Urban Planet. The 'phenomenal' number of vehicles on Hwy. 401 as it cuts through Toronto makes it the busiest freeway in North America...
  32. "List of World record highways". Inautonews.com. Archived from the original on 11 November 2013. Retrieved 21 March 2014.
  33. Schmidt, Steve (28 March 2007). "Four new southbound lanes at I-5/805 merge set to open". San Diego Union-Tribune . Archived from the original on 18 July 2011.
  34. Notable for the introduction of the world's first electronic toll collection system, the Via Verde .