Street
A street is a public thoroughfare in a city, town or village, typically lined with buildings on one or both sides. Streets often include pavements, pedestrian crossings, and sometimes amenities like streetlights or benches. A street can be as simple as a level patch of dirt, but is more often paved with a hard, durable surface such as tarmac, concrete, cobblestone or brick. It can be designed for both social activity and movement.
Originally, the word street simply meant a paved road. The word street is still sometimes used informally as a synonym for road, for example in connection with the ancient Watling Street, but city residents and urban planners draw a significant modern distinction: a road's main function is transportation, while streets facilitate public interaction. Examples of streets include pedestrian streets, alleys, and city-centre streets too crowded for motor vehicles to pass. Conversely, highways and motorways are types of roads, but few would refer to them as streets.
When a street needs to support heavy through traffic, it can come to resemble a road. Such a street-road combination is known as a stroad.
Etymology
The word street has its origins in the Latin strata ; it is thus related to stratum and stratification. The first recorded use of word stratæ referring to the road has been made by Eutropius. Ancient Greek stratos means army: Greeks originally built roads to move their armies. Old English applied the word to Roman roads in Britain such as Ermine Street, Watling Street, etc. Later it acquired a dialectical meaning of "straggling village", which were often laid out on the verges of Roman roads and these settlements often became named Stretton. In the Middle Ages, a road was a way people travelled, with street applied specifically to paved ways.History
Streets have their roots to antiquity in ancient roads or trade routes, designed for practical purposes like transportation, commerce or defence. In many cities, streets may have originated as paths through wilderness or were shaped by natural features like rivers, hills or the coastline.As towns and cities grew from the first civilizations, streets were planned to facilitate urban development. Early street names often echoed local landmarks, businesses or key figures. Some streets were named after royalty, national heroes or historical events. Over time when settlements increased, streets were modified to support growing populations.
During the Industrial Revolution in the 18th and 19th centuries, industrialization dramatically changed many cities. Streets became centres for commerce, trade and industrial activity, leading to the construction of factories, warehouses and transportation hubs. It resulted in overcrowding, pollution and changes in the architecture of surrounding buildings.
As cities grew, so did the demographics and the functions of certain streets. In some cases, a street may have become associated with particular communities, industries or events. For example, certain streets may have become known for their vibrant cultural or artistic scenes or for being focal points during political protests or social movements.
In the 20th and 21st centuries, streets probably underwent major transformations with the advent of automobiles, public transport systems and urban planning policies. Many streets have been pedestrianized, revitalized with new businesses, or preserved for historical purposes. Streets that once served as industrial centres might now house cafes, boutiques and galleries.
Subsequently, streets have been shaped by urban planning and gentrification. Older neighbourhoods may have been revitalized or developed into trendy areas, often displacing long-time residents. Street names and the businesses along them may also change as a result of economic shifts and demographic changes.
Role in the built environment
The street is a public easement, one of the few shared between all sorts of people. As a component of the built environment as ancient as human habitation, the street sustains a range of activities vital to civilization. Its roles are as numerous and diverse as its ever-changing cast of characters.Streets can be loosely categorized as main streets and side streets. Main streets are usually broad with a relatively high level of activity. Commerce and public interaction are more visible on main streets, and vehicles may use them for longer-distance travel. Side streets are quieter, often residential in use and character, and may be used for parking.
Circulation
Circulation, or less broadly, transportation, is perhaps a street's most visible use, and certainly among the most important. The unrestricted movement of people and goods within a city is essential to its commerce and vitality, and streets provide the physical space for this activity.In the interest of order and efficiency, an effort may be made to segregate different types of traffic. This is usually done by carving a road through the middle for motorists, reserving pavements on either side for pedestrians; other arrangements allow for streetcars, trolleys, and even wastewater and rainfall runoff ditches. In the mid-20th century, as the automobile threatened to overwhelm city streets with pollution and ghastly accidents, many urban theorists came to see this segregation as not only helpful but necessary in order to maintain mobility.
Le Corbusier, for one, perceived an ever-stricter segregation of traffic as an essential affirmation of social order—a desirable, and ultimately inevitable, expression of modernity. To this end, proposals were advanced to build "vertical streets" where road vehicles, pedestrians, and trains would each occupy their own levels. Such an arrangement, it was said, would allow for even denser development in the future.
These plans were never implemented comprehensively, a fact which today's urban theorists regard as fortunate for vitality and diversity. Rather, vertical segregation is applied on a piecemeal basis, as in sewers, utility poles, depressed highways, elevated railways, common utility ducts, the extensive complex of underground malls surrounding Tokyo Station and the Ōtemachi subway station, the elevated pedestrian skyway networks of Minneapolis and Calgary, the underground cities of Atlanta and Montreal, and the multilevel streets in Chicago.
Transportation is often misunderstood to be the defining characteristic, or even the sole purpose, of a street. This has not been the case since the word "street" came to be limited to urban situations, and even in the automobile age, is still demonstrably false. A street may be temporarily blocked to all through traffic in order to secure the space for other uses, such as a street fair, a flea market, children at play, filming a movie, or construction work. Many streets are bracketed by bollards or Jersey barriers so as to keep out vehicles. These measures are often taken in a city's busiest areas, the "destination" districts, when the volume of activity outgrows the capacity of private passenger vehicles to support it. A feature universal to all streets is a human-scale design that gives its users the space and security to feel engaged in their surroundings, whatever through traffic may pass.
Vehicular traffic
Despite this, the operator of a motor vehicle may regard a street as merely a thoroughfare for vehicular travel or parking. As far as concerns the driver, a street can be one-way or two-way: vehicles on one-way streets may travel in only one direction, while those on two-way streets may travel both ways. One way streets typically have signs reading "ONE WAY" and an arrow showing the direction of allowed travel. Most two-way streets are wide enough for at least two lanes of traffic.Which lane is for which direction of traffic depends on what country the street is located in. On broader two-way streets, there is often a centre line marked down the middle of the street separating those lanes on which vehicular traffic goes in one direction from other lanes in which traffic goes in the opposite direction. Occasionally, there may be a median strip separating lanes of opposing traffic. If there is more than one lane going in one direction on a main street, these lanes may be separated by intermittent lane lines, marked on the street pavement. Side streets often do not have centre lines or lane lines.
Parking for vehicles
Many streets, especially side streets in residential areas, have an extra lane's width on one or both sides for parallel parking. Most minor side streets allowing free parallel parking do not have pavement markings designating the parking lane. Main streets more often have parking lanes marked. Some streets are too busy or narrow for parking on the side. Sometimes parking on the sides of streets is allowed only at certain times. Curbside signs often state regulations about parking. Some streets, particularly in business areas, may have parking meters into which coins must be paid to allow parking in the adjacent space for a limited time. Other parking meters work on a credit card and ticket basis or pay and display. Parking lane markings on the pavement may designate the meter corresponding to a parking space. Some wide streets with light traffic allow angle parking or herringbone parking.Sidewalk and bicycle traffic
s or pavements are often located alongside on one or usually both sides of the street within the public land strips beyond the curbs. Sidewalks serve a traffic purpose, by making walking easier and more attractive, but they also serve a social function, allowing neighbors to meet and interact on their walks. They also can foster economic activity, such as window shopping and sidewalk cafes. Some studies have found that shops on streets with sidewalks get more customers than similar shops without sidewalks.An important element of sidewalk design is accessibility for persons with disabilities. Features that make sidewalks more accessible include curb ramps, tactile paving and accessible traffic signals. The Americans with Disabilities Act requires accessibility improvement on new and reconstructed streets within the US.
In most jurisdictions, bicycles are legally allowed to use streets, and required to follow the same traffic laws as motor vehicle traffic. Where the volume of bicycle traffic warrants and available right-of-way allows, provisions may be made to separate cyclists from motor vehicle traffic. Wider lanes may be provided next to the curb, or shoulders may be provided.
Bicycle lanes may be used on busy streets to provide some separation between bicycle traffic and motor vehicle traffic.
The bicycle lane may be placed between the travel lanes and the parking lanes, between the parking lanes and the curb, or for increased safety for cyclists, between curb and sidewalk. These poorer designs can lead to Dooring incidents and are unsafe for cycling.
A more sensible design is found in the Netherlands with a Protected Bicycle Path totally separate from the traffic which is safe for cycling.