Modelling and Analysis of Urban Traffic Noise System Using Algebraic Graph Theoretic Approach

An Urban Traffic Noise System can be considered to consist of various subsystems like Road Traffic Subsystem, Human Subsystem, Environment Subsystem, Traffic Network Subsystem and Urban Prosperity Subsystem. These subsystems would include all the relevant parameters which affect the noise in an urban traffic scenario. In the present work, only the Road Traffic System and some of its major parameters have been considered and an Algebraic Graph Theoretic model is presented which emulates the chosen input dataset with a satisfactory level of accuracy, after incorporating the interaction effects. The parameters like traffic volume, street width, height of measuring point above street level and estimated speed with the interactions between them have been identified and modelled as permanent noise function. The evaluation of the ‘permanent function’ as a noise index and its correlation with the experimental values of traffic noise level descriptors, \(L_\mathrm{eq}\), \(L_{90 }\) and \(L_{10}\), is shown with the help of an illustrative example.