Abstract
Traffic noise is a major pollution problem in Hong Kong and many large cities throughout the world. Indeed, traffic noise and traffic flow patterns interact, however, there is a very little research effort studying it. To the best knowledge of the authors, the present research is the first on-site measurement study about the effect of a traffic signal on the noise level of moving vehicles. Various cases of “stop and go” and “non-stop” were considered in the traffic noise measurements, where the terms “stop and go” and “non-stop” represent a traffic road with and without traffic signals, respectively. The L10 and Leq noise levels were recorded and compared in the present study. From the results, it was found that the stop time and traffic flow are factors that also affect the sound level properties.
Highlights
In recent decades, many researchers have investigated various environmental noise research topics such as railway noise [1,2], aircraft noise [3,4], wind turbine noise [5,6], marine/port noise [7,8,9], noise and health [10,11], and, noise measurement method [12,13]
The present study mainly focused on the effect of a traffic signal on the roadside sound levels emitted by controlled vehicles
The present work investigates the impact of traffic signal settings on the noise level of moving vehicles
Summary
Many researchers have investigated various environmental noise research topics such as railway noise [1,2], aircraft noise [3,4], wind turbine noise [5,6], marine/port noise [7,8,9], noise and health [10,11], and, noise measurement method [12,13]. The current study is a combination of the two research topics (i.e., road traffic noise and traffic signal system). Conducted simulations to study the effects of traffic signal coordination/traffic light control on noise. In their studies, there were no on-site measurement results. Most research works about road traffic noise only focused on mathematical modelling, evaluation method, road gradient and vehicle type effects amongst others. Tang and Tong [28] carried a set of site measurements on the kerbs of 19 inclined roads and studied the effect of road gradients on the traffic noise. The present study mainly focused on the effect of a traffic signal on the roadside sound levels emitted by controlled vehicles. The effect of stop duration, number of vehicles passing measurement point, type of vehicles, and traffic flow etc. were studied
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