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A median strip, central reservation, roadway median, or traffic median is the reserved area that separates opposing lanes of traffic on divided roadways such as divided highways, dual carriageways, freeways, and motorways. The term also applies to divided roadways other than highways, including some major streets in urban or suburban areas.
An Interstate Highway under construction , with both directions of traffic moved to one side of the roadway I-94 in Michigan, showing examples of non-interchange overpass signage in median, upcoming exit signage on right shoulder, a pre-1960 overpass with height restriction signage, newly installed cable median barrier, and parallel grooved ...
The greatest risk reduction in terms of head-on collision comes through the separation of oncoming traffic, also known as median separation or median treatment, which can reduce road collisions in the order of 70%. [6] Indeed, both Ireland and Sweden have undertaken large programmes of safety fencing on 2+1 roads.
The president's motorcade passed on the other side of the road without incident as the vehicle involved in the crash slowed to a halt.
See three-way junction 5-1-1 A transportation and traffic information telephone hotline in some regions of the United States and Canada that was initially designated for road weather information. A Access road See frontage road Advisory speed limit A speed recommendation by a governing body. All-way stop or four-way stop An intersection system where traffic approaching it from all directions ...
Despite this, no expressway allows traffic to cross the median strip (apart from U-turns on a limited number of expressways) and expressways do not have at-grade traffic signals or roundabouts. Expressways have a maximum speed limit of 110 km/h (68 mph), while speed limits of 90 km/h (56 mph) or lower are typical in built-up areas.
A traffic island is a solid or painted object in a road that channels traffic. It can also be a narrow strip of island between roads that intersect at an acute angle . If the island uses road markings only, without raised curbs or other physical obstructions, it is called a painted island or (especially in the UK) ghost island .
The Dulles Airport Express bypassing traffic using the shoulder lane. In some jurisdictions in the United States and Canada, buses are allowed to drive on the shoulder to pass traffic jams, which is called a bus-only shoulder or bus-bypass shoulder (BBS); [4] the term "bus-only shoulder lane" is incorrect from a technical and legal standpoint. [5]