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Encyclopedia > Jersey barrier
Jersey wall on the Woodrow Wilson Bridge near Washington, D.C.
Jersey wall on the Woodrow Wilson Bridge near Washington, D.C.

A Jersey barrier or Jersey wall separates lanes of traffic (often opposing lanes of traffic) with a goal of minimizing vehicle crossover in the case of accidents. It is also used as defense against car bombs. Image File history File linksMetadata Wwbr0064. ... Image File history File linksMetadata Wwbr0064. ... Wikimedia Commons has media related to: Woodrow Wilson Bridge Woodrow Wilson Memorial Bridge, on the Potomac River at Alexandria, Virginia, completed in 1961 Interstate 95 (District of Columbia) redirects here. ... Car bomb in Iraq, made from a number of concealed artillery shells in the back of a pickup truck. ...


It was originally developed at Stevens Institute of Technology in Hoboken, N.J. to divide multiple lanes on a highway by the state of New Jersey in the United States. A Jersey barrier stands 3–5 feet tall and is made of poured concrete. Their widespread use on the highway has led to many other uses as a general barrier (for instance, during general construction projects or constructing temporary walkways). They are also known as K-rails (especially in Western states or when used temporarily during roadway construction) or traffic dividers. Category: ... Federal courts Supreme Court Chief Justice Associate Justices Elections Presidential elections Midterm elections Political Parties Democratic Republican Third parties State & Local government Governors Legislatures State Courts Counties, Cities, and Towns Other countries â€¢ Politics Portal      A state of the United States is any one of the fifty subnational entities referred to... Official language(s) None, English de facto Capital Trenton Largest city Newark Area  Ranked 47th  - Total 8,729 sq mi (22,608 km²)  - Width 70 miles (110 km)  - Length 150 miles (240 km)  - % water 14. ... A foot (plural: feet) is any of several old units of distance or length, measuring around a quarter to a third of a meter. ... Concrete is a construction material that consists, in its most common form, of Portland cement, construction aggregate (generally gravel and sand) and water. ...

A Jersey barrier is a concrete barrier originally developed as a highway median.
A Jersey barrier is a concrete barrier originally developed as a highway median.

The design of the Jersey barrier was specifically intended to minimize damage and reduce the likelihood of a car crossing into oncoming lanes in the event of a collision. For the more common shallow angle hits, the Jersey barrier is intended to minimize sheet metal damage by allowing the vehicle tires to ride up on the lower sloped face. Image File history File links Jersey_barrier. ... Image File history File links Jersey_barrier. ... In physics, collision means the action of bodies striking or coming together (touching). ... Sheet metal is simply metal formed into thin and flat pieces. ... A tire or tyre (see spelling differences and etymological origins) is a device covering the circumference of a wheel. ...


For higher impact angles, the Jersey barrier is actually a multistage barrier. The front bumper impacts the upper sloped face and slides upwards. This interaction initiates lifting of the vehicle. If the bumper is relatively weak, the front end starts to crush before any uplift occurs. Then, as the vehicle becomes more nearly parallel with the barrier, the wheel contacts the lower sloped face. Most of the additional lift of the vehicle is caused by the lower sloped face compressing the front suspension. However, wheel side-scrubbing forces provide some additional lift, particularly if the barrier face is rough. Therefore, exposed aggregate and other rough surface finishes should be avoided. Modern vehicles have relatively short distances between the bumper and the wheel; as a result, bumper contact is followed almost immediately by wheel contact. A bumper is a part of a car designed to allow one vehicle to push another and to withstand the impact from collisions. ... The front suspension components of a Ford Model T. Suspension is the term given to the system of springs, shock absorbers and linkages that connects a vehicle to its wheels. ...


It is only necessary to lift the vehicle enough to reduce the friction between the tires and the paved surface. This aids in banking and redirecting the vehicle. If the vehicle is lifted too high into the air, it may yaw, pitch, or roll, which can cause the vehicle to roll over when the wheels come in contact with the ground again. Concrete safety shape barriers should be adjacent to a paved surface so that the wheels cannot dig into the soil and cause the vehicle to overturn. Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. ... This article is about the American English usage of pavement as the durable surfacing of roads and walkways. ... Flight dynamics is the study of orientation of air and space vehicles and how to control the critical flight parameters, typically named pitch, roll and yaw. ... Flight dynamics is the study of orientation of air and space vehicles and how to control the critical flight parameters, typically named pitch, roll and yaw. ... Flight dynamics is the study of orientation of air and space vehicles and how to control the critical flight parameters, typically named pitch, roll and yaw. ...


Modern variations include the Constant Slope Barrier, which has one constant slope from the base to the top, and the F-Shape Barrier. The F-Shape is similar to the Jersey Barrier in appearance, but has different angles and is much taller. The F-Shape is thought to be the best current concrete barrier design. It takes its name from a set of tested barriers that were assigned letters as identification. A constant slope barrier is a traffic barrier made of reinforced concrete and designed with a single slope that is used to separate lanes of vehicular traffic. ... The F-Shape Barrier is a concrete barrier, originally designed to divide lanes of traffic on a highway. ...


In the State of New Jersey the term "Jersey barrier" is rarely used. Residents, government agencies, and road traffic and media reports on radio and television (including stations located in New York City and Philadelphia) usually use the term "traffic divider". Nickname: Big Apple; City that never Sleeps; Gotham Location in the state of New York Coordinates: Country United States State New York Boroughs The Bronx Manhattan Queens Brooklyn Staten Island Settled 1613 Mayor Michael Bloomberg (R) Area    - City 1,214. ... Nickname: City of Brotherly Love, Philly, the City That Loves You Back, the Quaker City, The Birthplace of America Motto: Philadelphia maneto - Let brotherly love continue Location in Pennsylvania Coordinates: Country United States State Pennsylvania County Philadelphia Founded October 27, 1682 Incorporated October 25, 1701 Mayor John F. Street (D...


The older guard rail barrier system did not prevent traffic from entering oncoming traffic. New Jersey first used concrete traffic barriers in 1955. The current shape was first implemented in 1959 as a result not of crash testing, but of police observation of the accident results of previously installed concrete barriers. A system designed to keep people or vehicles from (in most cases unintentionally) straying into dangerous or off-limits areas. ... 1955 (MCMLV) was a common year starting on Saturday of the Gregorian calendar. ... 1959 (MCMLIX) was a common year starting on Thursday of the Gregorian calendar. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...


Jersey barriers have been used extensively in the American ocupation of Iraq to fortify road-blocks and public infrustructure, along with modern "T" and "L" barriers, much taller variants.


See also

The second proper album of Beth Orton, Central Reservation helped Orton build on the success of her debut Trailer Park. ... A crash barrier is a barrier on a road designed to prevent vehicles from leaving the carriageway to improve road safety. ...

References

External links


  Results from FactBites:
 
New Jersey Median Barrier History (990 words)
This first generation of concrete barriers was developed to (a) minimize the number of out-of-control trucks penetrating the barrier, and (b) eliminate the need for costly and dangerous median barrier maintenance in high-accident locations with narrow medians -- concerns that are as valid today as they were 50 years ago".
Both New Jersey and California continued experimenting in the early 1960s, and the New Jersey barrier was widely adopted by California; they installed 132 miles by 1972 and 680 miles by 1988.
The F-shape barrier is similar to the New Jersey barrier, but bottom section is lower and the slope a bit flatter.
  More results at FactBites »

 
 

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