Architecture Engineering Department, Faculty of Engineering, Tanta University, Tanta, Egypt.
Acoustic Department, Housing and Building National Research Centre, Cairo, Egypt.
Environ Monit Assess. 2024 Aug 14;196(9):811. doi: 10.1007/s10661-024-12932-4.
Expanding road networks to accommodate various activities has significantly increased urban noise pollution, adversely affecting human health and quality of life. Numerous factors influence the noise level in urban areas, including road characteristics, traffic characteristics, surrounding buildings, and weather conditions. While previous studies have considered many of these factors individually, this study aims to integrate all relevant variables to comprehensively monitor and analyze their combined effects on noise levels. The objective is to determine the most influential factors that could be incorporated into effective noise reduction strategies. This research focuses on Cairo, one of the most densely populated cities in the world, where high noise levels are a persistent issue. A detailed case study of Tahrir Street in Dokki, Cairo, provides the basis for this investigation. One of the most crowded areas is El-Tahrir Street in Al-Dokki, which was selected as a case study in this research. This area experiences high traffic volume, with up to 1700 vehicles passing through within a 15-min interval. This significant traffic volume is the primary driver of the elevated noise levels in the area. Traffic and noise level monitoring was conducted using a field survey using the sound level meter. Consequently, a statistical analysis was conducted to investigate the correlation between different factors and the noise level and determine the most influential factors. The study revealed that traffic volume and congestion are the most significant factors influencing noise levels on Tahrir Street, exhibiting strong positive correlations (R = 0.38). Additionally, the study found an inverse relationship between vehicle speed and noise level due to high traffic volumes and identified that building characteristics and wind direction also play roles, albeit to a lesser extent.
道路网络的扩展以适应各种活动显著增加了城市噪声污染，对人类健康和生活质量产生了不利影响。许多因素会影响城市地区的噪声水平，包括道路特征、交通特征、周围建筑物和天气条件。虽然以前的研究已经分别考虑了这些因素中的许多因素，但本研究旨在整合所有相关变量，以全面监测和分析它们对噪声水平的综合影响。目的是确定可以纳入有效降噪策略的最具影响力的因素。本研究聚焦于开罗，这是世界上人口最稠密的城市之一，那里的高噪声水平是一个持续存在的问题。对开罗 Dokki 区的 Tahrir 街进行了详细的案例研究，为这项研究提供了基础。最拥挤的地区之一是 El-Tahrir 街在 Al-Dokki，该地区被选为这项研究的案例研究。该地区交通量很大，在 15 分钟的间隔内，有多达 1700 辆车辆通过。如此大的交通量是该地区噪声水平升高的主要原因。使用声级计进行现场调查，进行了交通和噪声水平监测。随后，进行了统计分析，以调查不同因素与噪声水平之间的相关性，并确定最具影响力的因素。研究表明，交通量和拥堵是影响 Tahrir 街噪声水平的最重要因素，它们之间存在很强的正相关关系（R=0.38）。此外，研究还发现，由于交通量较大，车辆速度与噪声水平之间存在反比关系，并且还发现建筑物特征和风向也有一定的作用，尽管作用较小。
