Simulation and Analysis of Road Traffic Noise among Urban Buildings Using Spatial Subdivision-Based Beam Tracing Method

Abstract

In order to realize the simulation and evaluation of road traffic noise among urban buildings, a spatial subdivision-based beam-tracing method is proposed in this study. First, the road traffic source is divided into sets of point sources and described with the help of vehicle emission model. Next, for each pair of source and receiver, spatial subdivision-based beam-tracing method is used in noise paths generation. At last, noise distribution can be got by noise calculation of all receivers considering the complex transmission among urban buildings. A measurement experiment with a point source is carried out to validate the accuracy of the method; the 0.8 m height and 2.5-m height average errors are about 0.9 dB and 1.2 dB, respectively. Moreover, traffic noise analysis under different building layouts and heights are presented by case applications and conclusions can be reached: (1) Different patterns result in different noise distributions and patterns designed as self-protective can lead to an obvious noise abatement for rear buildings. Noise differences between the front and rear buildings are about 7–12 dB with different patterns. (2) Noise value might not show a linear variation along with the height as shielding of different layers is various in reality.

Predicting Fine Spatial Scale Traffic Noise Using Mobile Measurements and Machine Learning

“…Previous studies have also found that building size, height, and locations, which influence noise transmission and reflection, played important roles in predicting traffic noise. − In contrast, we found that the maximum building height only contributed 1, 2, and 3% to the traffic noise prediction in XGB, LR, and NN, respectively. This may have been due to the consistently high density of buildings and homes in Long Beach, providing relatively little variation in our building data.…”

Impact Of Traffic Characteristics and Pavement Surface Condition on Noise Level for Rigid Pavement

“…Noise annoyance, on the other hand, is described as -the entire unwontedness of a noise, which encompasses not only the noise itself but also many other variables relating to the source and the context in which it is experienced‖ (Yano, Sato, Bjogrkman, & Rylander, 2002). The interaction of tire pavement and aerodynamic sources causes highway traffic noise Even though there has been a lot of research done on the level of traffic noise, (Abo-Qudais & Alhiary, 2007); (Chevallier, Can, Nadji, & Leclercq, 2009) (Wang, Cai, & Cui, 2019); (Covaciu, Florea, & Timar, 2015); and Li, et al, 2017) Nobody covers all of the most important variables in terms of traffic characteristics, geometric aspects, and pavement conditions all at the same time.…”

COVID‐19 and cardiovascular risk: Flying toward a silent world?

“…9 With the increase of urbanization and the growing of vehicles, many of residents living in high-rise buildings along traffic road are severely affected by chronic low-level traffic noise. 10 Animal studies showed that noise exposure increased levels of corticosteroids stress hormones, 11 involving the autonomous nervous system and endocrine signaling. In extreme cases, Takotsubo cardiomyopathy was described in relation with nighttime aircraft noise exposure.…”