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Subway systems, light rail transit and freight trains can send loud train noise into neighborhoods. Organizations such as the World Health Organization [1] and the U.S. Environmental Protection Agency have set guidelines for noise level decibel limits for rapid transit. Noise levels can be reduced by installing noise barriers next to the track. [2]
Noise regulation includes statutes or guidelines relating to sound transmission established by national, state or provincial and municipal levels of government. After the watershed passage of the United States Noise Control Act of 1972, [2] other local and state governments passed further regulations.
However, rail grinding to remove ridges or grooves is currently TfL’s principal means of addressing tube noise, and they have already undertaken 17,500 metres of noise and vibration-related rail ...
A train horn is an air horn used as an audible warning device on diesel and electric-powered trains. Its primary purpose is to alert persons and animals to an oncoming train, especially when approaching a level crossing. They are often extremely loud, allowing them to be heard from great distances.
A torpedo on a rail A detonator on a railway line in Belgium South African example. Typical uses of detonators include: A warning, caution or stop signal in dense fog, when signals are difficult to see; A warning of a train stopped on the line ahead by an incident or accident—the train crew are usually responsible for placing the detonators
Given the tonal design of the train whistle, the sound level, how often trains pass through a given community, the number of grade crossings in proximity, and the time of day (night) of occurrence, community residents residing near crossing sometimes feel that train whistles have a serious detrimental effect on the quality of life despite the ...
In 2015, after replacing 6,500 feet (1,981 m) and grinding down (smoothing) 3 miles (4.8 km) of rail in the tube, BART reported a reduction of noise there and positive feedback from riders. [28] BART also announced that the new train cars expected to enter service in December 2016 (see below) will be quieter, thanks to "'micro-plug' doors [that ...
In rail transport, a wayside horn is an audible signal used at level crossings. They can be used in place of, or in addition to, the locomotive's horn as the train approaches the crossing. They are often used in special railroad "quiet zones" in the United States, where the engineer is not required to sound the locomotive's horn at a crossing ...