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A gantry on the Cherokee Turnpike in Northeast Oklahoma. A gantry (also known as a sign holder, road sign holder, sign structure or road sign structure) is a traffic sign assembly in which signs are mounted or railway signals are supported on an overhead support.
A railway signal is a visual display device that conveys instructions or provides warning of instructions regarding the driver's ... A gantry or signal bridge may ...
Like nothing before, the Billups signal was a large gantry spanning the highway and was likely the first such use of a gantry-style crossing of the type now in relatively common use. Upon approach of a train, a giant neon sign lit up with the words "Stop-DEATH-Stop" beneath a lighted skull and crossbones .
Railway infrastructure on the hill-country main line, Sri Lanka, including a gantry of semaphore signals. The absolute block system came into use gradually during the 1850s and 1860s and became mandatory in the United Kingdom after Parliament passed legislation in 1889 following a number of accidents, most notably the Armagh rail disaster.
Gantry (transport), an overhead assembly on which highway signs or railway signals are posted; Gantry (rocketry), the frame which encloses and services a rocket at its launch pad; Gantry crane, a crane having a hoist fitted in a trolley for parallel movement Rubber tyred gantry crane, a mobile gantry crane used in intermodal operations
Railway semaphore signal is one of the earliest forms of fixed railway signals. This semaphore system involves signals that display their different indications to train drivers by changing the angle of inclination of a pivoted 'arm'. Semaphore signals were patented in the early 1840s by Joseph James Stevens, and soon became the most widely used ...
On pole- and gantry-mounted railway signals the most restrictive aspect is usually the lowest of the principal aspects. [9] This places the most restrictive aspect nearest to the driver's eyeline and also reduces the possibility of the lens becoming obscured by snow building up on the lens hood of an aspect below.
Gantry with old and new suspended equipment at Grivita railway station, Bucharest Unlike simple overhead wires, in which the uninsulated wire is attached by clamps to closely spaced crosswires supported by poles, catenary systems use at least two wires.
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