Urban expressways can generate excessive noise in the surrounding urban areas, and it tends to be more complex in mountainous cities, due to the undulating terrain, dense population and compact urban structures. This article aims to investigate the objective acoustic environment and road traffic noise exposure, including the noisy evaluation, annoyance and effect of roadside apartments in residential areas close to urban expressways in the high-density, high-rise, mountainous city of Chongqing. Three housing estates were selected for a series of field measurements, questionnaire surveys and noise mapping. There was a significant negative correlation between night-time noise levels and the distances to the urban expressway (p < 0.01). Moreover, the differences between the daytime and night-time noise levels were generally insignificant (0.7 to 3.6 dBA) at the roadside locations. Differences in reaction to noise exposure in a variety of both person-related and housing condition variables were found, especially between roadside and non-roadside locations or residents. In addition, 75.0% of roadside residents identified the traffic noise as ‘very’ or ‘extremely’ annoying, and 66.7% of them regarded the acoustic environment as the priority environmental factor that needs to be improved. Difference in the ‘bedroom-window orientation’ had a significant effect on subjective noise evaluation. Rectangular-shaped apartments along the roadside obtain better noise reduction capacities than tower-blocks through the simulation. The acoustic performance of road cuttings, as an appropriately designed earth embankment, is improved along with deeper vertical alignment, and slope angles of 30° and 75° should be avoided.

城市高速公路会在周围的城市区域产生过多的噪声，而由于地形起伏，人口密集和城市结构紧凑，山区城市的噪声往往更加复杂。本文旨在研究客观的声学环境和道路交通噪声暴露，包括重庆高密度，高层，山区城市中靠近城市高速公路的居民区的路边公寓的噪声评估，干扰和影响。选择了三个居住区进行一系列现场测量，问卷调查和噪声测绘。夜间噪声水平与距城市高速公路的距离之间存在显着的负相关关系（p  < 0.01）。此外，在路边位置，白天和晚上的噪音水平之间的差异通常很小（0.7至3.6 dBA）。在与人有关的各种变量和住房条件变量中，发现对噪声暴露的反应差异，尤其是在路边和非路边位置或居民之间。此外，有75.0％的路边居民认为交通噪声是“非常”或“极度”烦人，其中66.7％的人认为声学环境是需要改善的主要环境因素。“卧室-窗户方向”的差异对主观噪声评估有重大影响。通过仿真，沿着路边的矩形公寓可以获得比塔式大楼更好的降噪能力。道路路s的声学性能，