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Jersey barriers on the road. A Jersey barrier, Jersey wall, or Jersey bump is a modular concrete or plastic barrier employed to separate lanes of traffic.It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resulting in a likely head-on collision.
The F-shape barrier is a concrete crash barrier, originally designed to divide lanes of traffic on a highway. It is a modification of the widely used Jersey barrier design, and is generally considered safer. [1] A parametric study, one that systematically varies the parameters, was done through computer simulations of barrier profiles labeled A ...
Concrete median barrier on the N11 road near Dublin, Ireland. An August 1993 study by the US Federal Highway Administration quantified the correlation between median width and the reduction of both head-on accidents and severe injuries. The study found that medians without barriers should be constructed more than 30 feet (9.1 m) wide in order ...
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. Its advantages compared to more complex shapes arise because its performance is not as affected by changes in the height of the roadbed during repaving.
Damage to Bremer wall concrete barriers in Afghanistan, 2012. During the Iraq war, US forces found concrete to be their most effective weapon to reduce violence and protect the local population from sectarian violence while impeding the movement of insurgents. At an average cost of $600 per wall in the mid-2000s, billions of dollars were spent ...
The concrete step barrier in the under construction M8 motorway in Ireland (August 2008). With effect from January 2005 and based primarily on safety grounds, the UK National Highways policy is that all new motorway schemes are to use high-containment concrete barriers in the central reserve.
On the controlled-access highway, opposing directions of travel are generally separated by a median strip or central reservation containing a traffic barrier or grass. Elimination of conflicts with other directions of traffic dramatically improves safety, [ 2 ] while increasing traffic capacity and speed.
Concrete barrier may refer to: Alaska Barrier; Bremer barrier; Traffic barrier; Concrete step barrier; Constant-slope barrier; F-Shape barrier; Jersey barrier