Abstract
Abstract Metro has become one of the most used means among public transit due to its advantages such as mass transit capacity, safety, fast speed, and comfort. Despite its benefits, workers and passengers ride the metro daily, and they are continuously being exposed to a high level of noise. Noise exposure has been related to various health-related issues. This paper presents an evaluation of the acoustic environment at the station’s platform and studies factors affecting the platform’s noise levels. Greater Cairo Metro Line 1, 2, and 3 have been selected as a case study. The result indicates that noise levels are unacceptable compared with the international standards of noise exposure as the highest measured noise level at station platforms was 93.93 dB(A). Regarding the rolling stocks type, the L Aeq was different from one type to another, with a range of 2.28 to 6.5 dB(A). The L Aeq on the underground platforms station was 11 dB(A) higher than on the surface stations regarding the station type. For underground stations, the L Aeq on curved platforms higher than the straight platforms when a train arrived, stop and go from the station with a range of 2.7 to 4.9 dB(A). Regarding the station platform dimension, the L Aeq on the underground platforms with a 5 m width is higher than the one with a 3 m width by 3 dB(A).
Highlights
Metro has become one of the most used means among public transit
The result indicates that noise levels are unacceptable compared with the international standards of noise exposure as the highest measured noise level at station platforms was 93.93 dB(A)
This paper studied the noise in the station’s platforms of Ground Cairo Metro (GCM) as one of the most critical environmental issues in these stations
Summary
Metro has become one of the most used means among public transit. Metro has its unique advantages among other public transit, such as mass transit capacity, safety and reliability, fast speed, and comfort. Traffic authorities in big cities pay attention and continuously develop the metro as it is more environmentally friendly than other public transport modes and reduces the number of cars on the road, which in turn reduces the air pollution and traffic congestion caused by individual vehicles. Despite these advantages, rail is perceived as one of the most environmentally friendly means of transport. Exposure to high levels of noise has adverse effects in the short and long term.
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