Wye (rail)

A wye or triangular junction, in rail terminology, is a triangular shaped arrangement of rail tracks with a switch or set of points at each corner. In mainline railroads, this can be used at a rail junction, where two rail lines join, in order to allow trains to pass from one line to the other line.

Wyes can also be used for turning railway equipment. By performing the railway equivalent of a three-point turn, the direction of travel and the relative orientation of a locomotive or railway vehicle can be reversed, resulting in it facing in the direction from which it came. Where a wye is built specifically for reversing purposes, one or more of the tracks making up the junction will typically be a stub siding.

Tram or streetcar tracks also make use of triangular junctions and sometimes have a short triangle or wye stubs to turn the car at the end of the line.

Considerations

At junctions

The use of triangular junctions allows flexibility in routing trains from any line to any other line, without the need to reverse the train. For this reason they are common across most rail networks. Slower bi-directional trains may enter a wye, letting a faster one pass, and continue on the same direction providing service to nearby freight transport or a passenger station.

Rail

Rail or rails may refer to:

Rail transport

Science, technology, biology, and medicine

Batten (theater)

In theater, a batten (also known as a bar or pipe) is a long metal pipe suspended above the stage or audience from which lighting fixtures, theatrical scenery, and theater drapes and stage curtains may be hung. Battens that are located above a stage can usually be lowered to the stage (flown in) or raised into a fly tower above the stage (flown out) by a counterweighted fly system or automated, motor-driven lift.

Types

Electric

An electric is a batten that incorporates electrical cables above the pipe, often enclosed in a raceway. It typically has power cables for lights and DMX512 data cable for lighting control, and may also have audio cables for microphones. The cables emerge from one end of the batten and continue through a snake to dimmers, control boards, or patchbays. All cable plugs have identifying numbers printed on them so that they can be easily referenced by the lighting control system. Loaded electrics are among the heaviest types of battens, often weighing more than a thousand pounds. Consequently, electrics must be properly balanced to avoid catastrophic runaways.

RAIL (magazine)

RAIL is a UK magazine on the subject of current rail transport in Great Britain. It is published every two weeks by Bauer Consumer Media and is available in the transport sections of many British newsagents. It is targeted primarily at the enthusiast market (those whose hobby is railways, rather than their occupation), but also covers business issues, often in depth.

RAIL is more than three decades old, and was known as Rail Enthusiast from its launch in 1981 until 1988. It is one of only two railway magazines that increased its circulation in 2012 (the other being The Railway Magazine, published monthly, which RAIL outperforms overall). It has had roughly the same cover design for at least a decade, with a capitalised italic red RAIL along the top of the front cover.

Editorial policy

RAIL is customarily critical of railway institutions, including the Rail Delivery Group, the Office of Rail Regulation, as well as, since it assumed greater railway powers, the Department for Transport. RAIL's continuing campaigns include one against advertising and media images showing celebrities and others walking between the rails (an unsafe practice) and another against weeds on railways.