A road is a thoroughfare for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets , whose primary function is to serve as public spaces, the main function of roads is transportation.
124-506: A highway is any public or private road or other public way on land. It includes not just major roads, but also other public roads and rights of way . In the United States, it is also used as an equivalent term to controlled-access highway , or a translation for motorway , Autobahn , autostrada , autoroute , etc. According to Merriam-Webster , the use of the term predates the 12th century. According to Etymonline , "high"
248-565: A hybrid or mixed legal system . The nature of Scots law before the 12th century is largely speculative, but is likely to have been a mixture of different legal traditions representing the different cultures inhabiting the land at the time, including Gaelic , Welsh , Norse and Anglo-Saxon customs. There is evidence to suggest that as late as the 17th century marriage laws in the Highlands and Islands still reflected Gaelic custom, contrary to Catholic religious principles. The formation of
372-701: A legislature with England and Wales . Scotland retained a fundamentally different legal system from that south of the border , but the Union exerted English influence upon Scots law. Since the UK joined the European Union, Scots law has also been affected by European law under the Treaties of the European Union , the requirements of the European Convention on Human Rights (entered into by members of
496-400: A road use tax , is payable on some vehicles used on the public road. The definition of a road depends on the definition of a highway; there is no formal definition for a highway in the relevant Act. A 1984 ruling said "the land over which a public right of way exists is known as a highway; and although most highways have been made up into roads, and most easements of way exist over footpaths,
620-411: A single carriageway road is converted into dual carriageway by building a second separate carriageway alongside the first, it is usually referred to as duplication , twinning or doubling . The original carriageway is changed from two-way to become one-way, while the new carriageway is one-way in the opposite direction. In the same way as converting railway lines from single track to double track ,
744-667: A "highway" as only a way open for use by 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 are "highways" that are entitled to be maintained with state highway funds. Large scale highway systems developed in the 20th century as automobile usage increased. The first United States limited-access road
868-457: A 25 to 50 millimeter hole through the pavement into the sub-base with a dry-bit roto-hammer . Next, a two-part epoxy is poured into the hole – dyed for visual clarity. Once the epoxy hardens, technicians drill through the hole. If a void is present, the epoxy will stick to the core and provide physical evidence. Common stabilization materials include pozzolan -cement grout and polyurethane. The requirements for slab stabilization are strength and
992-614: A May 2009 report by the American Association of State Highway and Transportation Officials (AASHTO) and TRIP – a national transportation research organization – driving on rough roads costs the average American motorist approximately $ 400 a year in extra vehicle operating costs. Drivers living in urban areas with populations more than 250,000 are paying upwards of $ 750 more annually because of accelerated vehicle deterioration, increased maintenance, additional fuel consumption , and tire wear caused by poor road conditions. When
1116-419: A double-wheeled, steel roller to insert the rod to the desired depth. After inserting the backer rod, the sealant is placed into the joint. There are various materials to choose for this method including hot pour bituminous liquid, silicone and preformed compression seals. Careful design and construction of roads can increase road traffic safety and reduce the harm (deaths, injuries, and property damage) on
1240-798: A five-year period." A 2021 study found that areas that obtained access to a new highway experienced a substantial increase in top-income taxpayers and a decline in low-income taxpayers. Highways also contributed to job and residential urban sprawl. 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. Air quality issues: Highways may contribute fewer emissions than arterials carrying
1364-403: A highway available to vehicles is also available to foot or horse traffic, a highway available to horse traffic is available to cyclists and pedestrians; but there are exceptional cases in which a highway is only available to vehicles, or is 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
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#17327800694281488-438: A highway. Recent examples include 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. Limited access highways for vehicles, with their own traffic rules, are called "motorways" in
1612-755: A large body of legal precedent has been developed, so that many crimes, such as murder, are not codified . Sources of common law in Scotland are the decisions of the Scottish courts and certain rulings of the Supreme Court of the United Kingdom (including its predecessor the House of Lords ). The degree to which decisions of the Supreme Court are binding on Scottish courts in civil matters
1736-413: A major two-level (and at one point, three-level) roadway in the downtown area, are being rebuilt with a designed service life of 100 years. Virtually all roads require some form of maintenance before they come to the end of their service life. Pro-active agencies use pavement management techniques to continually monitor road conditions and schedule preventive maintenance treatments as needed to prolong
1860-559: 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" 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 (e.g. vehicular, horse, pedestrian) or limited to specific modes of traffic; usually
1984-408: A public highway is also known as " The King's Highway ". 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
2108-668: A public road is not included in the relevant statistics. 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. It is also the world's most expensive mega-project, as the entirety of the Interstate Highway System
2232-428: A road as "a line of communication (travelled way) using a stabilized base other than rails or air strips open to public traffic, primarily for the use of road motor vehicles running on their own wheels", which includes "bridges, tunnels, supporting structures, junctions, crossings, interchanges, and toll roads, but not cycle paths". The Eurostat , ITF and UNECE Glossary for Transport Statistics Illustrated defines
2356-494: A road as a "Line of communication (traveled way) open to public traffic, primarily for the use of road motor vehicles, using a stabilized base other than rails or air strips. [...] Included are paved roads and other roads with a stabilized base, e.g. gravel roads. Roads also cover streets, bridges, tunnels, supporting structures, junctions, crossings and interchanges. Toll roads are also included. Excluded are dedicated cycle lanes." The 1968 Vienna Convention on Road Traffic defines
2480-510: A road as the entire surface of any way or street open to public traffic. In urban areas roads may diverge through a city or village and be named as streets, serving a dual function as urban space easement and route. Modern roads are normally smoothed, paved, or otherwise prepared to allow easy travel . Part 2, Division 1, clauses 11–13 of the National Transport Commission Regulations 2006 defines
2604-524: A road in Australia as 'an area that is open to or used by the public and is developed for, or has as one of its main uses, the driving or riding of motor vehicles.' Further, it defines a shoulder (typical an area of the road outside the edge line, or the curb) and a road-related area which includes green areas separating roads, areas designated for cyclists and areas generally accessible to the public for driving, riding or parking vehicles. In New Zealand,
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#17327800694282728-432: Is 40 years for new bitumen and concrete pavement. Maintenance is considered in the whole life cost of the road with service at 10, 20 and 30-year milestones. Roads can be and are designed for a variety of lives (8-, 15-, 30-, and 60-year designs). When pavement lasts longer than its intended life, it may have been overbuilt, and the original costs may have been too high. When a pavement fails before its intended design life,
2852-739: Is Scotland’s supreme criminal court and deals with the most serious crime. The Court of Session is the supreme civil court. The majority of crime is prosecuted by The Crown Office and Procurator Fiscal Service , which provides the independent public prosecution service for Scotland similar to the Crown Prosecution Service in England and Wales and the Public Prosecution Service in Northern Ireland. The Crown Office and Procurator Fiscal Service
2976-433: Is a non-destructive method of solving this problem and is usually employed with other concrete pavement restoration methods including patching and diamond grinding. The technique restores support to concrete slabs by filing small voids that develop underneath the concrete slab at joints, cracks or the pavement edge. The process consists of pumping a cementitious grout or polyurethane mixture through holes drilled through
3100-400: 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. A 2016 study found that for the United States, "a 10% increase in a region's stock of highways causes a 1.7% increase in regional patenting over
3224-487: Is also common. Some road fixtures such as road signs and fire hydrants are designed to collapse on impact. Light poles are designed to break at the base rather than violently stop a car that hits them. Highway authorities may also remove larger trees from the immediate vicinity of the road. During heavy rains, if the elevation of the road surface is not higher than the surrounding landscape, it may result in flooding. Speed limits can improve road traffic safety and reduce
3348-437: Is also the country’s death investigation service, and is responsible for investigating all suspicious, sudden or unexplained deaths. Unlike England and Wales Scotland has no coronial system to investigate deaths. Instead a Fatal Accident Inquiry (FAI), presided over by a judge, may be established to determine the cause of a death and any steps to prevent deaths in similar circumstances. Except in circumstances where an FAI
3472-485: Is another common procedure used to locate voids. It is recommended to do this testing at night as during cooler temperatures, joints open, aggregate interlock diminishes and load deflections are at their highest. Ground penetrating radar pulses electromagnetic waves into the pavement and measures and graphically displays the reflected signal. This can reveal voids and other defects. The epoxy/core test, detects voids by visual and mechanical methods. It consists of drilling
3596-412: Is being popular in many cities to combat most of the social problems caused from highways. 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)
3720-451: Is controversial, especially where those decisions relate to cases brought from other legal jurisdictions; however, decisions of the Supreme Court in appeals from Scotland are considered binding precedent . In criminal cases the highest appellate court is the Court of Justiciary and so the common law related to criminal law in Scotland has been largely developed only in Scotland. Rulings of
3844-418: Is discovered it is removed, moisture content is managed and replaced with standard fill compacted to meet the design requirements (generally 90–95% relative compaction). Blasting is not frequently used to excavate the roadbed as the intact rock structure forms an ideal road base. When a depression must be filled to come up to the road grade the native bed is compacted after the topsoil has been removed. The fill
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3968-467: 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"
4092-451: Is made by the "compacted layer method" where a layer of fill is spread then compacted to specifications, under saturated conditions. The process is repeated until the desired grade is reached. General fill material should be free of organics , meet minimum California bearing ratio (CBR) results and have a low plasticity index . The lower fill generally comprises sand or a sand-rich mixture with fine gravel, which acts as an inhibitor to
4216-554: Is mandatory, such as deaths in prison or in police custody, the Crown Office will determine whether an FAI would be in the public interest. Scots law can be traced to its early beginnings as a number of different custom systems among Scotland's early cultures to its modern role as one of the three legal jurisdictions of the United Kingdom. The various historic sources of Scots law, including custom , feudal law , canon law , civilian ius commune and English law have created
4340-504: Is measured using the generalised cost of travel, which includes both money and time expenditure. 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
4464-602: Is passed by the Scottish Parliament on all areas of devolved responsibility, and the United Kingdom Parliament on reserved matters. Some legislation passed by the pre-1707 Parliament of Scotland is still also valid. Early Scots law before the 12th century consisted of the different legal traditions of the various cultural groups who inhabited the country at the time, the Gaels in most of
4588-428: 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 . Major highways are often named and numbered by the governments that typically develop and maintain them. Australia's Highway 1
4712-571: Is primarily due to environmental effects such as frost heaves , thermal cracking and oxidation often contribute, however accumulated damage from vehicles also contributes. According to a series of experiments carried out in the late 1950s, called the AASHO Road Test , it was empirically determined that the effective damage done to the road is roughly proportional to the fourth power of axle weight . A typical tractor-trailer weighing 80,000 pounds (36.287 t ) with 8,000 pounds (3.629 t) on
4836-522: Is some ambiguity between the terms highway and road . For the purposes of the English law , Highways Act 1980 , which covers England and Wales but not Scotland or Northern Ireland , road is "any length of highway or of any other road to which the public has access, and includes bridges over which a road passes". This includes footpaths, bridleways and cycle tracks, and also road and driveways on private land and many car parks. Vehicle Excise Duty ,
4960-410: Is taken to preserve reference Benchmarks Roads are designed and built for primary use by vehicular and pedestrian traffic. Storm drainage and environmental considerations are a major concern. Erosion and sediment controls are constructed to prevent detrimental effects. Drainage lines are laid with sealed joints in the road easement with runoff coefficients and characteristics adequate for
5084-467: Is the legal system of Scotland . It is a hybrid or mixed legal system containing civil law and common law elements, that traces its roots to a number of different historical sources. Together with English law and Northern Irish law , it is one of the three legal systems of the United Kingdom . Scots law recognises four sources of law: legislation, legal precedent, specific academic writings, and custom. Legislation affecting Scotland and Scots law
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5208-773: 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. 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
5332-546: Is the native material underneath a constructed road. Road construction requires the creation of an engineered continuous right-of-way or roadbed , overcoming geographic obstacles and having grades low enough to permit vehicle or foot travel , and may be required to meet standards set by law or official guidelines. The process is often begun with the removal of earth and rock by digging or blasting, construction of embankments , bridges and tunnels , and removal of vegetation (this may involve deforestation ) and followed by
5456-559: Is usually stripped and stockpiled nearby for rehabilitation of newly constructed embankments along the road. Stumps and roots are removed and holes filled as required before the earthwork begins. Final rehabilitation after road construction is completed will include seeding, planting, watering and other activities to reinstate the area to be consistent with the untouched surrounding areas. Processes during earthwork include excavation, removal of material to spoil, filling, compacting, construction and trimming. If rock or other unsuitable material
5580-741: The Acts of Union 1707 merged the Kingdom of Scotland and the Kingdom of England to form the new Kingdom of Great Britain . Article 19 of the Act confirmed the continuing authority of the College of Justice , Court of Session and Court of Justiciary in Scotland. Article 3, however, merged the Estates of Scotland with the Parliament of England to form the Parliament of Great Britain , with its seat in
5704-644: The Council of Europe ) and the creation of the devolved Scottish Parliament which may pass legislation within all areas not reserved to Westminster , as detailed by the Scotland Act 1998 . The UK Withdrawal from the European Union (Continuity) (Scotland) Act 2020 was passed by the Scottish Parliament in December 2020. It received royal assent on 29 January 2021 and came into operation on
5828-534: The European Court of Human Rights and the Court of Justice of the European Union also contribute to the common law in the interpretation of the European Convention on Human Rights and European law respectively. The common law of Scotland should not be confused with the common law of England , which has different historical roots. The historical roots of the common law of Scotland are the customary laws of
5952-537: The Human Rights Act 1998 and European law , otherwise the Court of Session or High Court of Justiciary have the authority to strike down the legislation as ultra vires . There have been a number of high-profile examples of challenges to Scottish Parliament legislation on these grounds, including against the Protection of Wild Mammals (Scotland) Act 2002 where an interest group unsuccessfully claimed
6076-514: The Palace of Westminster , London . Under the terms of the Act of Union, Scotland retained its own systems of law, education and Church ( Church of Scotland , Presbyterian polity), separately from the rest of the country. The Parliament of Great Britain otherwise was not restricted in altering laws concerning public right, policy and civil government, but concerning private right, only alterations for
6200-466: The Parliament of the United Kingdom is not subject to revocation by the courts as the Parliament is said to have supreme legal authority; however, application of legislation is subject to judicial review and also in practice, the Parliament will tend not to create legislation which contradicts the Human Rights Act 1998 or European law , although it is technically free to do so. The degree to which
6324-548: The Scotland Act 1998 and the European Communities Act 1972 have special status in the law of Scotland. Modern statutes will specify that they apply to Scotland and may also include special wording to take into consideration unique elements of the legal system. Statutes must receive royal assent from the King before becoming law , however this is now only a formal procedure and is automatic. Legislation of
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#17327800694286448-483: The burghs and lesser landowners. In 1399 a General Council established that the King should hold a parliament at least once a year for the next three years so "that his subjects are served by the law". In 1318 a parliament at Scone enacted a code of law that drew upon older practices, but it was also dominated by current events and focused on military matters and the conduct of the war of Scottish Independence . From
6572-417: The church courts , the direct influence of Roman law was slight up until around the mid-15th century. After this time, civilian ius commune was often adopted in argument in court, in an adapted form, where there was no native Scots rule to settle a dispute; and civil law was in this way partially received in subsidium into Scots law. Since the Acts of Union 1707 , Scotland has shared a legislature with
6696-406: The land zoning and storm water system. Drainage systems must be capable of carrying the ultimate design flow from the upstream catchment with approval for the outfall from the appropriate authority to a watercourse , creek , river or the sea for drainage discharge. A borrow pit (source for obtaining fill, gravel, and rock) and a water source should be located near or in reasonable distance to
6820-565: The 14th century we have surviving examples of early Scottish legal literature, such as the Regiam Majestatem (on procedure at the royal courts) and the Quoniam Attachiamenta (on procedure at the baron courts). Both of these important texts, as they were copied, had provisions from Roman law and the ius commune inserted or developed, demonstrating the influence which both these sources had on Scots law. From
6944-419: The 1920s and 1930s, many nations began investing heavily in highway systems in an effort to spur commerce and bolster national defence. Major 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 ,
7068-579: The Kingdom of Scotland and its subjugation of the surrounding cultures, completed by the Battle of Carham , established what are approximately the boundaries of contemporary mainland Scotland. The Outer Hebrides were added after the Battle of Largs in 1263, and the Northern Isles were acquired in 1469, completing what is today the legal jurisdiction of Scotland. From the 12th century feudalism
7192-509: The Parliament began to create unified legal statutes applying in both England and Scotland, particularly when conformity was seen as necessary for pragmatic reasons (such as the Sale of Goods Act 1893 ). Appeal decisions by English judges raised concerns about this appeal to a foreign system, and in the late 19th century Acts allowed for the appointment of Scottish Lords of Appeal in Ordinary . At
7316-696: The Parliament has surrendered this sovereignty is a matter of controversy with arguments generally concerning what the relationship should be between the United Kingdom and the European Union . Acts of the United Kingdom Parliament also regularly delegate powers to Ministers of the Crown or other bodies to produce legislation in the form of statutory instruments . This delegated legislation has legal effect in Scotland so far as
7440-426: The U.S., many of these effects are from racist planning practices from before the advent of civil rights . This would result in the vast majority of displacement and social effects mostly going to people like African Americans. In recent times, the use of freeway removal or the public policy of urban planning to demolish freeways and create mixed-use urban areas, parks, residential, commercial, or other land uses
7564-510: The UK. 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 but remains in common law. In American law,
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#17327800694287688-422: The ability to flow into or expand to fill small voids. Colloidal mixing equipment is necessary to use the pozzolan-cement grouts. The contractor must place the grout using a positive-displacement injection pump or a non-pulsing progressive cavity pump. A drill is also necessary but it must produce a clean hole with no surface spalling or breakouts. The injection devices must include a grout packer capable of sealing
7812-521: The average US motorist pays about $ 335/year. In contrast, the average motorist pays about $ 171/year in road maintenance taxes (based on 600 gallons/year and $ 0.285/gallon tax). Distress and serviceability loss on concrete roads can be caused by loss of support due to voids beneath the concrete pavement slabs. The voids usually occur near cracks or joints due to surface water infiltration . The most common causes of voids are pumping, consolidation, subgrade failure and bridge approach failure. Slab stabilization
7936-522: The ban on fox hunting violated their human rights. Legislation passed by the Scottish Parliament also requires royal assent which, like with the Parliament of the United Kingdom , is automatically granted. Legislation passed by the pre-1707 Parliament of Scotland still has legal effect in Scotland, though the number of statutes that have not been repealed is limited. Examples include the Royal Mines Act 1424 , which makes gold and silver mines
8060-633: The country, with the Britons and Anglo-Saxons in some districts south of the Forth and with the Norse in the islands and north of the River Oykel . The introduction of feudalism from the 12th century and the expansion of the Kingdom of Scotland established the modern roots of Scots law, which was gradually influenced by other, especially Anglo-Norman and continental legal traditions . Although there
8184-551: The definition of a road is broad in common law where the statutory definition includes areas the public has access to, by right or not. Beaches, publicly accessible car parks and yards (even if privately owned), river beds, road shoulders (verges), wharves and bridges are included. However, the definition of a road for insurance purposes may be restricted to reduce risk. In the United Kingdom The Highway Code details rules for "road users", but there
8308-465: The design structural capacity, stop erosion or eliminate faulting. It does, however, restore the slab support, therefore, decreasing deflections under the load. Stabilization should only be performed at joints and cracks where the loss of support exists. Visual inspection is the simplest manner to find voids. Signs that repair is needed are transverse joint faulting, corner breaks and shoulder drop off and lines at or near joints and cracks. Deflection testing
8432-476: The different cultures which inhabited the region, which were mixed together with feudal concepts by the Scottish Kings to form a distinct common law. The influence that English-trained judges have had on the common law of Scotland through rulings of the Supreme Court of the United Kingdom (and formerly the House of Lords ) has been at times considerable, especially in areas of law where conformity
8556-644: The establishment of a specialised group of councillors to the King evolving from the King's Council who dealt solely with the administration of justice. In 1528, it was established that the Lords of Council not appointed to this body were to be excluded from its audiences and it was also this body that four years later in 1532 became the College of Justice. The 1688 Glorious Revolution and the Claim of Right in 1689 established Parliamentary Sovereignty in Scotland, and
8680-466: The establishment of the Scottish Parliament which may pass legislation within its areas of legislative competence as detailed by the Scotland Act 1998 . The Parliament of the United Kingdom has the power to pass statutes on any issue for Scotland, although under the Sewel convention it will not do so in devolved matters without the Scottish Parliament 's consent. The Human Rights Act 1998 ,
8804-400: The evident utility of the subjects within Scotland were permitted. The Scottish Enlightenment then reinvigorated Scots law as a university-taught discipline. The transfer of legislative power to London and the introduction of appeal in civil but not criminal cases to the House of Lords (now, by appeal to the new Supreme Court of the United Kingdom ) brought further English influence. Acts of
8928-467: The federal government's Manual on Uniform Traffic Control Devices ). Italy was the first country in the world to build controlled-access highways reserved for fast traffic and for motor vehicles only. The Autostrada dei Laghi ("Lakes Highway"), the first built in the world, connecting Milan to Lake Como and Lake Maggiore , and now parts of the A8 and A9 highways, was devised by Piero Puricelli and
9052-441: The first pathways were the trails made by animals has not been universally accepted; in many cases animals do not follow constant paths. Some believe that some roads originated from following animal trails. The Icknield Way may exemplify this type of road origination, where human and animal both selected the same natural line. By about 10,000 BC human travelers used rough roads/pathways. In transport engineering , subgrade
9176-416: The functional condition of the road while reducing the need for routing maintenance, leading to extended service life without increasing structural capacity. Older concrete pavements that develop faults can be repaired with a dowel bar retrofit , in which slots are cut in the pavement at each joint, and dowel bars are placed in the slots, which are then filled with concrete patching material. This can extend
9300-431: The general public: for example 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,
9424-464: The growth of plants or other vegetable matter. The compacted fill also serves as lower-stratum drainage. Select second fill ( sieved ) should be composed of gravel , decomposed rock or broken rock below a specified particle size and be free of large lumps of clay . Sand clay fill may also be used. The roadbed must be "proof rolled" after each layer of fill is compacted. If a roller passes over an area without creating visible deformation or spring
9548-404: The highway system from traffic collisions. On neighborhood roads traffic calming , safety barriers , pedestrian crossings and cycle lanes can help protect pedestrians, cyclists, and drivers. Lane markers in some countries and states are marked with Cat's eyes or Botts dots. Botts dots are not used where it is icy in the winter, because frost and snowplows can break the glue that holds them to
9672-580: The hole. The injection device must also have a return hose or a fast-control reverse switch, in case workers detect slab movement on the uplift gauge. The uplift beam helps to monitor the slab deflection and has to have sensitive dial gauges. Also called joint and crack repair, this method's purpose is to minimize infiltration of surface water and incompressible material into the joint system. Joint sealants are also used to reduce dowel bar corrosion in concrete pavement restoration techniques. Successful resealing consists of old sealant removal, shaping and cleaning
9796-411: The jurisdictions include the age of legal capacity (16 years old in Scotland but 18 years old in England and Wales), and the fact that equity was never a distinct branch of Scots law. Some examples in criminal law include: In Scotland there are justice of the peace courts and sheriff courts , rather than magistrates' courts or Crown Court as in England and Wales. The High Court of Justiciary
9920-404: The laying of pavement material. A variety of road building equipment is employed in road building. After design, approval , planning , legal, and environmental considerations have been addressed alignment of the road is set out by a surveyor . The radii and gradient are designed and staked out to best suit the natural ground levels and minimize the amount of cut and fill. Great care
10044-482: The life of the concrete pavement for 15 years. Failure to maintain roads properly can create significant costs to society. A 2009 report released by the American Association of State Highway and Transportation Officials estimated that about 50% of the roads in the US are in bad condition, with urban areas worse. The report estimates that urban drivers pay an average of $ 746/year on vehicle repairs while
10168-609: The lifespan of their roads. Technically advanced agencies monitor the road network surface condition with sophisticated equipment such as laser/inertial profilometers . These measurements include road curvature , cross slope , asperity , roughness , rutting and texture . Software algorithms use this data to recommend maintenance or new construction. Maintenance treatments for asphalt concrete generally include thin asphalt overlays, crack sealing, surface rejuvenating, fog sealing, micro milling or diamond grinding and surface treatments . Thin surfacing preserves, protects and improves
10292-463: 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
10416-512: The network. 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. In Hong Kong , some highways are set up with bus lanes to solve
10540-515: The new carriageway is not always constructed directly alongside the existing carriageway. Roads that are intended for use by a particular mode of transport can be reallocated for another mode of transport, i.e. by using traffic signs . For instance, in the ongoing road space reallocation effort, some roads (particularly in city centers) which are intended for use by cars are increasingly being repurposed for cycling and/or walking . Like all structures, roads deteriorate over time. Deterioration
10664-477: The number of road traffic casualties from traffic collisions . In their World report on road traffic injury prevention report, the World Health Organization (WHO) identify speed control as one of various interventions likely to contribute to a reduction in road casualties. Road conditions are the collection of factors describing the ease of driving on a particular stretch of road, or on
10788-432: 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 the United States 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
10912-506: The owner may have excessive repair and rehabilitation costs. Some asphalt pavements are designed as perpetual pavements with an expected structural life in excess of 50 years. Many asphalt pavements built over 35 years ago, despite not being specifically designed as a perpetual pavement, have remained in good condition long past their design life. Many concrete pavements built since the 1950s have significantly outlived their intended design lives. Some roads like Chicago 's Wacker Drive ,
11036-418: The pavement performance, reduce construction costs and decrease maintenance. The completed roadway is finished by paving or left with a gravel or other natural surface. The type of road surface is dependent on economic factors and expected usage. Safety improvements such as traffic signs , crash barriers , raised pavement markers and other forms of road surface marking are installed. According to
11160-659: 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. Mostly in
11284-513: The presence or absence of a made road has nothing to do with the distinction. Another legal view is that while a highway historically included footpaths , bridleways , driftways, etc., it can now be used to mean those ways that allow the movement of motor vehicles , and the term rights of way can be used to cover the wider usage. In the United States, laws distinguish between public roads , which are open to public use, and private roads , which are privately controlled. The assertion that
11408-467: The property of the King , and the Leases Act 1449 , which is still relied on today in property law cases. Legislation which forms part of the law of Scotland should not be confused with a civil code as it does not attempt to comprehensively detail the law. Legislation forms only one of a number of sources. Common law is an important legal source in Scotland, especially in criminal law where
11532-1008: The public so that drivers going through a particular area can be aware of hazards that may exist in that area. News agencies, in turn, rely on tips from area residents with respect to certain aspects of road conditions in their coverage area. Scots law Charles III William , Duke of Rothesay Swinney government The Rt Hon John Swinney MSP The Rt Hon John Swinney MSP Kate Forbes MSP Sixth session Alison Johnstone MSP Angela Constance MSP Dorothy Bain KC The Rt Hon Lord Carloway KC PC United Kingdom Parliament elections European Parliament elections Local elections Referendums Starmer ministry The Rt Hon Keir Starmer MP The Rt Hon Ian Murray MP Scots law ( Scottish Gaelic : Lagh na h-Alba )
11656-400: The reformation of the Scottish Parliament . An early Scottish legal compilation, Regiam Majestatem , was based heavily on Glanvill 's English law treatise , although it also contains elements of civil law , feudal law, canon law, customary law and native Scots statutes . Although there was some indirect Roman-law influence on Scots law, via medieval ius commune and canon law used in
11780-407: The reign of King James I to King James V the beginnings of a legal profession began to develop and the administration of criminal and civil justice was centralised. The Parliament of Scotland was normally called on an annual basis during this period and its membership was further defined. The evolution of the modern Court of Session also traces its history to the 15th and early 16th century with
11904-418: The reservoir, installing the backer rod and installing the sealant. Sawing, manual removal, plowing and cutting are methods used to remove the old sealant. Saws are used to shape the reservoir. When cleaning the reservoir, no dust, dirt or traces of old sealant should remain. Thus, it is recommended to water wash, sand-blast and then air blow to remove any sand, dirt or dust. The backer rod installation requires
12028-411: The rest of the United Kingdom . Scotland retained a fundamentally different legal system from that of England and Wales , but the Union brought English influence on Scots law. In recent years, Scots law has also been affected by European law under the Treaties of the European Union , the requirements of the European Convention on Human Rights (entered into by members of the Council of Europe ) and
12152-494: The road conditions". Specific aspects of road conditions can be of particular importance for particular purposes. For example, for autonomous vehicles such as self-driving cars , significant road conditions can include "shadowing and lighting changes, road surface texture changes, and road markings consisting of circular reflectors, dashed lines, and solid lines". Various government agencies and private entities, including local news services, track and report on road conditions to
12276-399: The road construction area may be marked for retention. These protected trees should not have the topsoil within the area of the tree's drip line removed and the area should be kept clear of construction material and equipment. Compensation or replacement may be required if a protected tree is damaged. Much of the vegetation may be mulched and put aside for use during reinstatement. The topsoil
12400-512: The road construction site. Approval from local authorities may be required to draw water or for working (crushing and screening) of materials for construction needs. The topsoil and vegetation is removed from the borrow pit and stockpiled for subsequent rehabilitation of the extraction area. Side slopes in the excavation area not steeper than one vertical to two horizontal for safety reasons. Old road surfaces, fences, and buildings may need to be removed before construction can begin. Trees in
12524-473: The road, although they can be embedded in short, shallow trenches carved in the roadway, as is done in the mountainous regions of California. For major roads risk can be reduced by providing limited access from properties and local roads, grade separated junctions and median dividers between opposite-direction traffic to reduce the likelihood of head-on collisions. The placement of energy attenuation devices (e.g. guardrails, wide grassy areas, sand barrels)
12648-423: The roads around the world each year 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. For reasons of clear data collection, only harm involving a road vehicle is included. A person tripping with fatal consequences or dying for some unrelated reason on
12772-404: The roads of a particular locality, including the quality of the pavement surface , potholes , road markings, and weather . It has been reported that "[p]roblems of transportation participants and road conditions are the main factors that lead to road traffic accidents". It has further been specifically noted that "weather conditions and road conditions are interlinked as weather conditions affect
12896-456: 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 1.2 million people were killed and 50 million injured on
13020-716: The same day. It provides powers for the Scottish Ministers to keep devolved Scots law in alignment with future EU Law . The United Kingdom, judicially, consists of three jurisdictions : England and Wales, Scotland, and Northern Ireland. There are important differences among Scots law, English law and Northern Irish law in areas such as property law , criminal law , trust law , inheritance law , evidence law and family law while there are greater similarities in areas of UK-wide interest such as commercial law , consumer rights, taxation, employment law and health and safety regulations. Examples of differences among
13144-541: The same time, a series of cases made it clear that no appeal lay from the High Court of Justiciary to the House of Lords. Today the Supreme Court of the United Kingdom usually has a minimum of two Scottish justices to ensure that some Scottish experience is brought to bear on Scottish appeals. Scots law has continued to change and develop in the 20th century, with the most significant change coming under devolution and
13268-634: 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
13392-406: The section is deemed to comply. Geosynthetics such as geotextiles , geogrids , and geocells are frequently used in the various pavement layers to improve road quality. These materials and methods are used in low-traffic private roadways as well as public roads and highways. Geosynthetics perform four main functions in roads: separation, reinforcement, filtration, and drainage; which increase
13516-437: The slab. The grout can fill small voids beneath the slab and/or sub-base. The grout also displaces free water and helps keep water from saturating and weakening support under the joints and slab edge after stabilization is complete. The three steps for this method after finding the voids are locating and drilling holes, grout injection and post-testing the stabilized slabs. Slab stabilization does not correct depressions, increase
13640-399: The specific provisions of the statutory instrument are duly authorised by the powers of the Act, a question which can be subjected to judicial review. The Scottish Parliament is a devolved unicameral legislature that has the power to pass statutes only affecting Scotland on matters within its legislative competence . Legislation passed by the Scottish Parliament must also comply with
13764-419: The steer axle and 36,000 pounds (16.329 t) on both of the tandem axle groups is expected to do 7,800 times more damage than a passenger vehicle with 2,000 pounds (0.907 t) on each axle. Potholes on roads are caused by rain damage and vehicle braking or related construction work. Pavements are designed for an expected service life or design life . In some parts of the United Kingdom the standard design life
13888-1191: The traffic congestion. 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 . The following is a list of highways by country in alphabetical order. Road There are many types of roads , including parkways , avenues , controlled-access highways (freeways, motorways, and expressways), tollways , interstates , highways , thoroughfares , and local roads. The primary features of roads include lanes , sidewalks (pavement), roadways (carriageways), medians , shoulders , verges , bike paths (cycle paths), and shared-use paths . Historically many roads were simply recognizable routes without any formal construction or some maintenance. The Organization for Economic Co-operation and Development (OECD) defines
14012-488: 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 ). 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
14136-444: 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. Road traffic safety describes
14260-836: 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 . Often reducing travel times relative to city or town streets, highways with limited access and grade separation can create increased opportunities for people to travel for business, trade or pleasure and also provide trade routes for goods. Highways can reduce commute and other travel time but additional road capacity can also release latent traffic demand . If not accurately predicted at
14384-453: The word "highway" is sometimes used to denote any public way used for travel, whether a "road, street, and parkway"; 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. Highways generally have a route number designated by the state and federal departments of transportation. California Vehicle Code, Sections 360, 590, define
14508-574: Was constructed on Long Island, New York, and known as the Long Island Motor Parkway or the Vanderbilt Motor Parkway. It was completed in 1911. It included many modern features, including banked turns , guard rails and reinforced concrete tarmac . Traffic could turn left between the parkway and connectors, crossing oncoming traffic, so it was not a controlled-access highway (or "freeway" as later defined by
14632-474: Was estimated to cost $ 27 billion in 1955 (equivalent to $ 240 billion in 2023). 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). 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. In 2008 alone, 6,433 kilometres (3,997 mi) expressways were added to
14756-509: Was gradually introduced to Scotland and established feudal land tenure over many parts of the south and east, which eventually spread northward. As feudalism began to develop in Scotland early court systems began to develop, including early forms of Sheriff Courts . Under Robert the Bruce the importance of the Parliament of Scotland grew as he called parliaments more frequently, and its composition shifted to include more representation from
14880-565: Was inaugurated in 1924. This highway, called autostrada , contained only one lane in each direction and no interchanges. The Southern State Parkway opened in 1927, while the Long Island Motor Parkway was closed in 1937 and replaced by the Northern State Parkway (opened 1931) and the contiguous Grand Central Parkway (opened 1936). In Germany, construction of the Bonn-Cologne Autobahn began in 1929 and
15004-624: Was opened in 1932 by Konrad Adenauer , then the mayor of Cologne . Soon the Autobahn was the first limited-access, high-speed road network in the world, with the first section from Frankfurt am Main to Darmstadt opening in 1935. 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 )
15128-574: 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. 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); in terms of general road law this legislation overturned
15252-425: Was required across the United Kingdom for pragmatic reasons. This has resulted in rulings with strained interpretations of the common law of Scotland, such as Smith v Bank of Scotland . A number of works by academic authors, called institutional writers , have been identified as formal sources of law in Scotland since at least the 19th century. The exact list of authors and works, and whether it can be added to,
15376-456: Was some indirect Roman law influence on Scots law, the direct influence of Roman law was slight up until around the 15th century. After this time, Roman law was often adopted in argument in court, in an adapted form, where there was no native Scots rule to settle a dispute; and Roman law was in this way partially received into Scots law. Since the Union with England Act 1707 , Scotland has shared
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