Abstract：
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.
摘要：
扩大路网以容纳各种活动,显著增加了城市噪声污染,对人类健康和生活质量产生不利影响。许多因素影响城市地区的噪声水平，包括道路特征，交通特点,周围的建筑物,和天气条件。虽然以前的研究已经单独考虑了许多这些因素，这项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。这项研究的重点是开罗，世界上人口最稠密的城市之一，高噪声水平是一个持续存在的问题。DokkiTahrir街的详细案例研究，开罗,为本次调查提供了依据。最拥挤的地区之一是Al-Dokki的El-Tahrir街，在这项研究中被选为案例研究。这个地区的交通量很大，在15分钟的间隔内，多达1700辆车通过。这种巨大的交通量是该地区噪声水平升高的主要驱动因素。使用声级计进行现场调查，进行交通和噪声水平监测。因此,进行了统计分析，以研究不同因素与噪声水平之间的相关性，并确定影响最大的因素。研究显示，交通量和拥堵是影响塔里尔街噪声水平的最重要因素，表现出较强的正相关(R=0.38)。此外,这项研究发现，由于高交通量，车辆速度和噪声水平之间的反比关系，并确定建筑特征和风向也起作用，虽然程度较小。
