Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Divided Highway shopping experience:
1. Compare - without doubt the biggest advantage that the Divided Highway offers shoppers today is the ability to compare thousands of Divided Highway at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Divided Highway? Wrong! If the Divided Highway is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Divided Highway then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Divided Highway? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Divided Highway and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Divided Highway wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Divided Highway then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Divided Highway site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Divided Highway, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Divided Highway, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
near Kingston upon Hull A
dual carriageway or
divided highway is a road or
highway in which the two directions of traffic are separated by a central barrier or strip of land, known as a
central reservation or
median. This type of road is usually able to carry a great deal more traffic than normal "single carriageway" roads and
boulevards.
United Kingdom
In the
United Kingdom, although the term
dual carriageway applies to any road with physically separated lanes, it is frequently used as a descriptive term for
highways built in this style. Such major dual carriageways usually have two lanes of traffic in each direction, with the lane nearest the centre being reserved for overtaking. Occasionally dual carriageways have only one lane in each direction, or more than two lanes each way (usually to permit easier overtaking of slower uphill traffic). Different speed limits apply on dual carriageway sections from those that apply on single carriageway sections of the same class of road, except in cities and built-up areas where the dual carriageway is more of a safety measure, often intended to prevent
pedestrians from crossing a busy road.
When first constructed, many dual carriageways - including the first motorways - had no crash or other barriers in the central reservation. Hence in the event of delays on the road, or if a driver missed his exit, there was a widespread problem of drivers making a U-turn onto the other carriageway; many accidents were caused as a result of their misjudging the speed of approaching traffic on the other carriageway when doing so. The majority of dual carriageway roads now have barriers. Some are heavy concrete obstructions which can have the effect of bouncing a vehicle back into the path of other traffic; others are made from steel ropes mounted on moderately weak posts, where the rope cuts into the vehicle body to slow the vehicle while keeping it against the barrier until it has stopped.
Turning right (that is, across the line of traffic heading in the opposite direction) is usually permitted only at specific locations. Often the driver will be required to turn left (away from the dual carriageway) in order to loop around to an access road that permits crossing the major road.
Roundabouts on dual carriageways are relatively common, especially in cities or where the cost of a grade-separated junction would be prohibitive.
A long-distance dual carriageway with grade-separated junctions and which meets other requirements may be upgraded to
motorway standard, denoted as an
(M) added after the road number (eg. "
A1 road").
Confusion
While most drivers are clear about what a
motorway is, some are confused about the definition of a dual carriageway. For a road to be classed as a dual carriageway, the two directions of
traffic flow must be
physically separated by a central reservation. The Traffic Signs Regulations and General Directions 2002 opsi.gov.uk A road where the two directions of flow are separated only by lines painted on the road surface is a single carriageway, regardless of the number of traffic lanes that may be available to the traffic in each direction. So a road with three or four lanes is not a dual carriageway if there is no central reservation.
Speed Limits
The national speed limit applies on dual carriageways (unless it is in a '
built up area', or a lower limit is posted), which is as follows:
{] up to 2 tonnes/
motorcycle or trailer||bgcolor="#ffffcc"|60 mph (96 km/h)|-|[Bus or Coach (vehicle) up to 12 m long||bgcolor="#ffffcc"|60 mph|-|Goods vehicle up to 7.5 t||bgcolor="#ffffcc"|60 mph|-|Goods vehicle over 7.5 t||bgcolor="#ccffcc"|50 mph (80 km/h)|}
Ireland
, south of
Newtownmountkennedy. On motorways, the yellow hard shoulder markings are unbroken.Although in the
Republic of Ireland the term dual carriageway technically applies to any road with physically separated lanes, it is usually used only to refer to those route sections that do not have a motorway designation. Most often it is
national roads (roads with a route number prefix of
N; e.g.
N8 road) that are built as or upgraded to dual carriageway. A number of non-national roads (for example,
regional roads) are dual carriageway, for example in urban areas near or in cities, or where the road was formerly part of a national route.
Dual carriageways of this class differ from motorways in a number of ways. The hard shoulder is demarkated with a dashed yellow line (as opposed to an unbroken yellow line on motorways). The standard speed limit of 100 km/h (62 mph) for national routes usually applies (by default the limit is 80 km/h (50 mph) for non-national roads, even if dual carriageway). Local authorities have the power to apply a limit of up to 120 km/h (75 mph) as used on most motorways (as of 2006, the N2 road north of the M50 motorway (Ireland) is the only route section with such a special limit). Traffic lights and junctions are permitted at grade on dual carriageways. For older sections of dual carriageway, this has resulted in fewer flyover junctions. Newer dual carriageway sections are usually near motorway standard, with grade-separated junctions, but may not be designated as motorways due to the need to preserve access to adjoining property or to the absence of a non-motorway alternative route. Also, dual carriageways that are not motorway classified do not need to be equipped with emergency phones.
Motorway restrictions only apply to motorway sections, rather than all dual carriageway sections of national roads (these are signposted with the
N prefix on the route number, rather than
M). Some
national secondary roads, and
regional roads in particular often have houses, schools and other developments fronting on to them. Less important
national primary roads, and older sections not yet upgraded may also feature such developments built before the introduction the Irish Planning system in 1964. Today Irish planning policy prohibits development on National Primary or National Secondary roads where the speed limit exceeds 60 km/h (37 mph), this is at the direction of the National Roads Authority, however a County Council is not obliged to implement this policy and can disregard this policy at it own discretion. This would usually only occur in exceptional circumstances or where planners are over ruled by elected councillors using section 140 of the Local Government Act 2001. Accordingly, hard shoulders are included wherever feasible to provide for the resulting pedestrian and cyclist traffic, and are present on much of the national route network. These may also be used by motorised traffic under certain conditions.
Until 2004/2005, many motorways and dual carriageways in Ireland did not have crash barriers in the central reservation, the policy being to use a wider median instead. These are now mandatory for such routes, and wire cabling or full crash barriers (depending on whether or not the route is a motorway, and median width) are being fitted to existing routes.
As of 2007 three major types of dual carriageway are being built on national road schemes in the Republic of Ireland:
- High Quality Dual Carriageway - this is being built mainly on inter-urban routes, and is to full motorway standard but without the regulations that go with the motorway classification. The Roads Act 2007 allows for these roads to be designated motorway by ministerial order.
- Standard dual carraigeway of the traditional type is mainly planed for schemes on the N11 road, N18 road, N20 road, and N25 road. Traditionally these had a mixture of at grade junctions (including roundabouts), grade separated junctions, and median crossings. Nowadays they are similar to HQDCs, but minor at grade exits - generally left turn only - are allowed and the design speed is only 100 kph. Median crossings and roundabouts are no longer generally found on these schemes. An example of a standard dual carriageway scheme opened in 2006 was the Ennis bypass.
- 2+2 road - These will be created by widening existing roads, and will have two lanes in each direction with a crash barrier in the middle but no hard shoulder. Junctions will be at grade. See 2+1 road for details of how this type came into usage. As yet, no 2+2 schemes have opened, although the R136 road in Dublin is to a similar specification for much of its distance.
North America
In the U.S. this type of road may be called a
divided highway and has a
median strip between the traffic directions.
In Canada, both
divided highway and
dual carriageway may be used for this type of road, although
divided highway is more common (as dual carriageway is an older term being used less than it used to); however, the segment between the roadways is always a
median strip rather than a central reservation. On some portions of Ontario's
400-Series Highways network, the median may be an "
Jersey barrier" barrier rather than an unpaved strip.
Junctions may be at-grade or
Grade separation, and there may be gaps in the median strip to allow turning and crossing. Divided highways are seldom equipped with
traffic circles, roundabouts or rotaries.
Road Meanings
- An undivided highway has no median, just painted double lines.
- A divided highway has a median (a Jersey Barrier, wire rope or a green median). This is known as a dual carriageway in the British Isles.
- A limited-access highway or superhighway permits entry or exit only at designated on- and offramps. It has no single-level intersections or crossing traffic. This kind of highway is known as a motorway in the British Isles.
- A tollway, toll highway, or (in some cases) turnpike is a limited-access highway that you pay a toll to use.
- A freeway or (in some regions) expressway is a limited-access highway that has no toll.
- In some parts of North America, roundabouts are rare. In others, they are known as rotaries.
- Where roads meet, they may be joined using an 'at-grade' intersection (in North America, generally using traffic signals).
- An 'arterial road' is a highway with at-grade intersections.
- An 'intersection' is where two or more roads meet at a single level.
- An 'interchange', such as a cloverleaf interchange is where two roads meet at two or more levels with no crossing traffic. Generally, at least one of the roads in an interchange is a limited-access highway or superhighway (also known as a tollway, freeway, or expressway).
- A Michigan Left requires that persons attempting to take a left turn from or onto many divided surface highways to go through the intersection, make a U-turn within the median, and then make a right turn.
Tollways/freeways/expressways
These are usually identified as divided highways with:
- At least two lanes on each side
- A speed limit of at least 80 km/h (50 miles per hour)
- A hard shoulder on each side (although not all of them provide this)
- No traffic lights
- No driveways
- A median (including wire rope, concrete (jersey) barrier, greenery of plants in the middle, etc)
- No pedestrians, 'slow vehicles' or bicycles (although some allow bicycles on the shoulder)
China
The best examples of dual carriageways in
mainland China can be seen on the
China National Highways. On some routes, such as
China National Highway 106, there is a central reservation.
Switzerland
Swiss dual carriageways are referred to as
Autostrasse. There may or may not be a central reservation.
Singapore
A high proportion of roads in Singapore are dual carriageways with central reservations; examples include Clementi Road, Commonwealth Avenue and Holland Road. Often there might be railings erected on the central reservation to prevent pedestrians from dashing across the road. These usually have traffic lights along the way but flyovers and road tunnels (or 'underpasses') can be built to minimise the use of traffic lights; for example, at the Holland Road-Farrer Road-Queensway junction there are three levels of roads. Before the 1980s roundabouts were popular but since then many have been changed to traffic-light controlled junctions.
These dual carriageways are to be distinguished from motorways, known in Singapore as expressways such as the Pan-Island Expressway (PIE) and Ayer Rajah Expressway (AYE) where no traffic lights are used.
Australia
. Examples of dual carriageway on non-urban roads in Australia include the
Hume Highway and the
Pacific Highway (Australia); The Hume Highway by 2012, will be 100% dual carriageway and the Pacific Highway by 2016 will also be 100% dual carriageway. Today, 90% of the Hume Highway is dual carriageway and today, only 40% or 280 km (174 mi) of the Pacific Highway is dual carriageway, plus 10% of the Pacific Highway or 78 kilometres (48 miles) is under construction. Some parts of the
Princes Highway and the Barton Highway are also dual carriageway.
Sources:
- AusLink
- Hume Highway
- Pacific Highway (Australia)
- DIVIDED HIGHWAY ACHIEVED BETWEEN BRISBANE AND BYRON BAY TURNOFF - MEDIA RELEASE, The Hon Jim Lloyd MP
- NSW South West construction projects, RTA
- Pacific Highway upgrade, RTA
History
A very early example (perhaps the first) of a dual carriageway was the
Via Portuensis, built in the
1st century by the Roman emperor
Claudius between
Rome and its port Ostia Antica (archaeological site) at the mouth of the
Tiber.
In 1907 the
Long Island Parkway opened and roughly 20% of it featured a semi-dual carriageway design. The New York City parkway system, which was built between 1907 and 1934, also pioneered the same design. However the majority of it featured concrete or brick railings as lane dividers as opposed to using grass mediums.
In 1924 the first Italian autostrada was opened running 55 km (34 mi) from Milan to Varese. It featured a broad road bed and did not feature lane dividers except near cities and through the mountains.
The London end of the
Great West Road became Britain's first dual carriageway when it was opened in 1925 by King George V .
In 1927 the Rome bypass was opened. It ran 92 km (57 mi) bypassing Rome to the east. Almost the entire length featured a dual carriageway design. In the early 1930s it was extended southward all the way to Naples and northward to Florence. Most of the original routing was destroyed by the Allies in the Second World War.
By 1930 several American and Europeon cities had built dual carriageway highways mostly to control traffic jams and/or to provide bypass routes for traffic.
In 1932 the first German
Autobahn opened between Cologne and Bonn. It ran 21 km (13 mi) and paved the way for future highways. Although it, like the first Autostrada, did not feature a dual carriageway design, it inspired the mass construction of future high speed roadways.
During the 1930s, Germany, Italy, and the Soviet Union began construction of a network of dual carriageway expressways. By 1942, Germany had over 3,200 km (2,000 miles) of dual carriageway roads, Italy had nearly 1,300 (800), and the Soviet Union had 400 (250).
What may be the world's first long-distance intercity dual carriageway/freeway is the
Queen Elizabeth Way in Southern Ontario Ontario in Canada, initially linking the large cities of
Toronto and
Hamilton, Ontario together by 1939, with construction on this stretch of the present-day Queen Elizabeth Way beginning in 1936 as "Middle Road".
In 1940 the Pennsylvania Turnpike was opened to traffic and at 160 miles (257 km) long it was the first rural dual carriageway built in the United States. By 1955 several states had bulit dual carriageway freeways and turpikes and in 1957 the Interstate Highway System began. Completed in 1994, the major highway system links all the major cities of the United States.
See also
External links
- Department for Transport. Speed: Know your limits (PDF)
References
near
Kingston upon Hull A
dual carriageway or
divided highway is a road or
highway in which the two directions of traffic are separated by a central barrier or strip of land, known as a
central reservation or
median. This type of road is usually able to carry a great deal more traffic than normal "single carriageway" roads and boulevards.
United Kingdom
In the
United Kingdom, although the term
dual carriageway applies to any road with physically separated lanes, it is frequently used as a descriptive term for
highways built in this style. Such major dual carriageways usually have two lanes of traffic in each direction, with the lane nearest the centre being reserved for overtaking. Occasionally dual carriageways have only one lane in each direction, or more than two lanes each way (usually to permit easier overtaking of slower uphill traffic). Different speed limits apply on dual carriageway sections from those that apply on single carriageway sections of the same class of road, except in cities and built-up areas where the dual carriageway is more of a safety measure, often intended to prevent pedestrians from crossing a busy road.
When first constructed, many dual carriageways - including the first motorways - had no crash or other barriers in the central reservation. Hence in the event of delays on the road, or if a driver missed his exit, there was a widespread problem of drivers making a U-turn onto the other carriageway; many accidents were caused as a result of their misjudging the speed of approaching traffic on the other carriageway when doing so. The majority of dual carriageway roads now have barriers. Some are heavy concrete obstructions which can have the effect of bouncing a vehicle back into the path of other traffic; others are made from steel ropes mounted on moderately weak posts, where the rope cuts into the vehicle body to slow the vehicle while keeping it against the barrier until it has stopped.
Turning right (that is, across the line of traffic heading in the opposite direction) is usually permitted only at specific locations. Often the driver will be required to turn left (away from the dual carriageway) in order to loop around to an access road that permits crossing the major road. Roundabouts on dual carriageways are relatively common, especially in cities or where the cost of a grade-separated junction would be prohibitive.
A long-distance dual carriageway with grade-separated junctions and which meets other requirements may be upgraded to
motorway standard, denoted as an
(M) added after the road number (eg. "
A1 road").
Confusion
While most drivers are clear about what a
motorway is, some are confused about the definition of a dual carriageway. For a road to be classed as a dual carriageway, the two directions of
traffic flow must be
physically separated by a central reservation. The Traffic Signs Regulations and General Directions 2002 opsi.gov.uk A road where the two directions of flow are separated only by lines painted on the road surface is a single carriageway, regardless of the number of traffic lanes that may be available to the traffic in each direction. So a road with three or four lanes is not a dual carriageway if there is no central reservation.
Speed Limits
The national speed limit applies on dual carriageways (unless it is in a 'built up area', or a lower limit is posted), which is as follows:
{] up to 2
tonnes/
motorcycle or trailer||bgcolor="#ffffcc"|60 mph (96 km/h)|-|[Bus or
Coach (vehicle) up to 12 m long||bgcolor="#ffffcc"|60 mph|-|Goods vehicle up to 7.5 t||bgcolor="#ffffcc"|60 mph|-|Goods vehicle over 7.5 t||bgcolor="#ccffcc"|50 mph (80 km/h)|}
Ireland
, south of Newtownmountkennedy. On motorways, the yellow hard shoulder markings are unbroken.Although in the Republic of Ireland the term dual carriageway technically applies to any road with physically separated lanes, it is usually used only to refer to those route sections that do not have a
motorway designation. Most often it is
national roads (roads with a route number prefix of
N; e.g.
N8 road) that are built as or upgraded to dual carriageway. A number of non-national roads (for example,
regional roads) are dual carriageway, for example in urban areas near or in cities, or where the road was formerly part of a national route.
Dual carriageways of this class differ from motorways in a number of ways. The hard shoulder is demarkated with a dashed yellow line (as opposed to an unbroken yellow line on motorways). The standard speed limit of 100 km/h (62 mph) for national routes usually applies (by default the limit is 80 km/h (50 mph) for non-national roads, even if dual carriageway). Local authorities have the power to apply a limit of up to 120 km/h (75 mph) as used on most motorways (as of 2006, the N2 road north of the
M50 motorway (Ireland) is the only route section with such a special limit). Traffic lights and junctions are permitted at grade on dual carriageways. For older sections of dual carriageway, this has resulted in fewer flyover junctions. Newer dual carriageway sections are usually near motorway standard, with grade-separated junctions, but may not be designated as motorways due to the need to preserve access to adjoining property or to the absence of a non-motorway alternative route. Also, dual carriageways that are not motorway classified do not need to be equipped with emergency phones.
Motorway restrictions only apply to motorway sections, rather than all dual carriageway sections of national roads (these are signposted with the
N prefix on the route number, rather than
M). Some
national secondary roads, and
regional roads in particular often have houses, schools and other developments fronting on to them. Less important
national primary roads, and older sections not yet upgraded may also feature such developments built before the introduction the Irish Planning system in 1964. Today Irish planning policy prohibits development on National Primary or National Secondary roads where the speed limit exceeds 60 km/h (37 mph), this is at the direction of the National Roads Authority, however a County Council is not obliged to implement this policy and can disregard this policy at it own discretion. This would usually only occur in exceptional circumstances or where planners are over ruled by elected councillors using section 140 of the Local Government Act 2001. Accordingly, hard shoulders are included wherever feasible to provide for the resulting pedestrian and cyclist traffic, and are present on much of the national route network. These may also be used by motorised traffic under certain conditions.
Until 2004/2005, many motorways and dual carriageways in Ireland did not have crash barriers in the central reservation, the policy being to use a wider median instead. These are now mandatory for such routes, and wire cabling or full crash barriers (depending on whether or not the route is a motorway, and median width) are being fitted to existing routes.
As of 2007 three major types of dual carriageway are being built on national road schemes in the Republic of Ireland:
- High Quality Dual Carriageway - this is being built mainly on inter-urban routes, and is to full motorway standard but without the regulations that go with the motorway classification. The Roads Act 2007 allows for these roads to be designated motorway by ministerial order.
- Standard dual carraigeway of the traditional type is mainly planed for schemes on the N11 road, N18 road, N20 road, and N25 road. Traditionally these had a mixture of at grade junctions (including roundabouts), grade separated junctions, and median crossings. Nowadays they are similar to HQDCs, but minor at grade exits - generally left turn only - are allowed and the design speed is only 100 kph. Median crossings and roundabouts are no longer generally found on these schemes. An example of a standard dual carriageway scheme opened in 2006 was the Ennis bypass.
- 2+2 road - These will be created by widening existing roads, and will have two lanes in each direction with a crash barrier in the middle but no hard shoulder. Junctions will be at grade. See 2+1 road for details of how this type came into usage. As yet, no 2+2 schemes have opened, although the R136 road in Dublin is to a similar specification for much of its distance.
North America
In the U.S. this type of road may be called a
divided highway and has a
median strip between the traffic directions.
In
Canada, both
divided highway and
dual carriageway may be used for this type of road, although
divided highway is more common (as dual carriageway is an older term being used less than it used to); however, the segment between the roadways is always a
median strip rather than a central reservation. On some portions of Ontario's
400-Series Highways network, the median may be an "Jersey barrier" barrier rather than an unpaved strip.
Junctions may be at-grade or Grade separation, and there may be gaps in the median strip to allow turning and crossing. Divided highways are seldom equipped with traffic circles, roundabouts or rotaries.
Road Meanings
- An undivided highway has no median, just painted double lines.
- A divided highway has a median (a Jersey Barrier, wire rope or a green median). This is known as a dual carriageway in the British Isles.
- A limited-access highway or superhighway permits entry or exit only at designated on- and offramps. It has no single-level intersections or crossing traffic. This kind of highway is known as a motorway in the British Isles.
- A tollway, toll highway, or (in some cases) turnpike is a limited-access highway that you pay a toll to use.
- A freeway or (in some regions) expressway is a limited-access highway that has no toll.
- In some parts of North America, roundabouts are rare. In others, they are known as rotaries.
- Where roads meet, they may be joined using an 'at-grade' intersection (in North America, generally using traffic signals).
- An 'arterial road' is a highway with at-grade intersections.
- An 'intersection' is where two or more roads meet at a single level.
- An 'interchange', such as a cloverleaf interchange is where two roads meet at two or more levels with no crossing traffic. Generally, at least one of the roads in an interchange is a limited-access highway or superhighway (also known as a tollway, freeway, or expressway).
- A Michigan Left requires that persons attempting to take a left turn from or onto many divided surface highways to go through the intersection, make a U-turn within the median, and then make a right turn.
Tollways/freeways/expressways
These are usually identified as divided highways with:
- At least two lanes on each side
- A speed limit of at least 80 km/h (50 miles per hour)
- A hard shoulder on each side (although not all of them provide this)
- No traffic lights
- No driveways
- A median (including wire rope, concrete (jersey) barrier, greenery of plants in the middle, etc)
- No pedestrians, 'slow vehicles' or bicycles (although some allow bicycles on the shoulder)
China
The best examples of dual carriageways in mainland China can be seen on the China National Highways. On some routes, such as China National Highway 106, there is a central reservation.
Switzerland
Swiss dual carriageways are referred to as
Autostrasse. There may or may not be a central reservation.
Singapore
A high proportion of roads in Singapore are dual carriageways with central reservations; examples include Clementi Road, Commonwealth Avenue and Holland Road. Often there might be railings erected on the central reservation to prevent pedestrians from dashing across the road. These usually have traffic lights along the way but flyovers and road tunnels (or 'underpasses') can be built to minimise the use of traffic lights; for example, at the Holland Road-Farrer Road-Queensway junction there are three levels of roads. Before the 1980s roundabouts were popular but since then many have been changed to traffic-light controlled junctions.
These dual carriageways are to be distinguished from motorways, known in Singapore as expressways such as the Pan-Island Expressway (PIE) and Ayer Rajah Expressway (AYE) where no traffic lights are used.
Australia
. Examples of dual carriageway on non-urban roads in Australia include the Hume Highway and the
Pacific Highway (Australia); The Hume Highway by 2012, will be 100% dual carriageway and the Pacific Highway by 2016 will also be 100% dual carriageway. Today, 90% of the Hume Highway is dual carriageway and today, only 40% or 280 km (174 mi) of the Pacific Highway is dual carriageway, plus 10% of the Pacific Highway or 78 kilometres (48 miles) is under construction. Some parts of the
Princes Highway and the Barton Highway are also dual carriageway.
Sources:
- AusLink
- Hume Highway
- Pacific Highway (Australia)
- DIVIDED HIGHWAY ACHIEVED BETWEEN BRISBANE AND BYRON BAY TURNOFF - MEDIA RELEASE, The Hon Jim Lloyd MP
- NSW South West construction projects, RTA
- Pacific Highway upgrade, RTA
History
A very early example (perhaps the first) of a dual carriageway was the
Via Portuensis, built in the
1st century by the Roman emperor
Claudius between Rome and its port
Ostia Antica (archaeological site) at the mouth of the Tiber.
In 1907 the Long Island Parkway opened and roughly 20% of it featured a semi-dual carriageway design. The
New York City parkway system, which was built between 1907 and 1934, also pioneered the same design. However the majority of it featured concrete or brick railings as lane dividers as opposed to using grass mediums.
In 1924 the first Italian autostrada was opened running 55 km (34 mi) from Milan to Varese. It featured a broad road bed and did not feature lane dividers except near cities and through the mountains.
The London end of the Great West Road became Britain's first dual carriageway when it was opened in 1925 by King George V .
In 1927 the Rome bypass was opened. It ran 92 km (57 mi) bypassing Rome to the east. Almost the entire length featured a dual carriageway design. In the early 1930s it was extended southward all the way to Naples and northward to Florence. Most of the original routing was destroyed by the Allies in the Second World War.
By 1930 several American and Europeon cities had built dual carriageway highways mostly to control traffic jams and/or to provide bypass routes for traffic.
In 1932 the first German Autobahn opened between Cologne and Bonn. It ran 21 km (13 mi) and paved the way for future highways. Although it, like the first Autostrada, did not feature a dual carriageway design, it inspired the mass construction of future high speed roadways.
During the 1930s, Germany, Italy, and the Soviet Union began construction of a network of dual carriageway expressways. By 1942, Germany had over 3,200 km (2,000 miles) of dual carriageway roads, Italy had nearly 1,300 (800), and the Soviet Union had 400 (250).
What may be the world's first long-distance
intercity dual carriageway/freeway is the
Queen Elizabeth Way in Southern Ontario
Ontario in Canada, initially linking the large cities of Toronto and
Hamilton, Ontario together by 1939, with construction on this stretch of the present-day Queen Elizabeth Way beginning in 1936 as "Middle Road".
In 1940 the
Pennsylvania Turnpike was opened to traffic and at 160 miles (257 km) long it was the first rural dual carriageway built in the United States. By 1955 several states had bulit dual carriageway freeways and turpikes and in 1957 the Interstate Highway System began. Completed in 1994, the major highway system links all the major cities of the United States.
See also
External links
- Department for Transport. Speed: Know your limits (PDF)
References
Rock Band Divided Highway Playing Contemporary, Classic and Country ...
Contemporary, classic and country-rock band from the Ottawa area. Provides a song list, news and an online booking form.
Pictures - Rock Band Divided Highway Playing Contemporary, Classic and ...
Divided Highway is a contemporary, classic and country rock band from the Ottawa area, composed of employees of Algonquin College, ready to play music at your next event, party or ...
Dual carriageway - Wikipedia, the free encyclopedia
A dual carriageway or divided highway is a road or highway in which the two directions of traffic are separated by a central barrier or strip of land, known as a central ...
divided highway - definition of divided highway by the Free Online ...
Noun: 1. divided highway - a highway divided down the middle by a barrier that separates traffic going in different directions; "in Britain they call a divided highway a dual ...
Home
Divided Highway Thanks for visiting! Divided Highway is Chris Peck (drums), Jeff Heath (bass guitar)and Mike Shuttleworth (vocals and guitar). Based out of central Wisconsin the power ...
Divided Highway on purevolume™
PureVolume is the place for rising artists to host their mp3s and get exposure. We showcase unsigned artists, independent labels, and major label artists. Visitors can download ...
Kino Oko: Alphabetically Divided Highway (CD) - Tribal Vision Records ...
Psyshop.com - Tribal Vision Records: Kino Oko Alphabetically Divided Highway; cd ... 1. Any kind of structure 2. Made in satisfaction 3. Body and mind 4. Mother Mature
Divided Highway Sign, Highway 395
Divided Highway Sign, Highway 395
divided - Hutchinson encyclopedia article about divided
One of the four basic operations of arithmetic, usually written in the form a ÷ b ... divided highway divided highway Divided highways Divided highways Divided into Alta ("upper") and ...
Divided Highway Tabs : 1 Tabs Total @ Ultimate-Guitar.Com
Divided Highway guitar tabs including Vase Song. ... Accurate Divided Highway Tabs: 1 tabs total, last updated 08/28/2003
