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Mathematical Problems in Engineering
Volume 2015, Article ID 369620, 7 pages
http://dx.doi.org/10.1155/2015/369620
Research Article

The Performance of CRTN Model in a Motorcycle City

Department of Decision Sciences, Macau University of Science and Technology, Macau

Received 5 April 2015; Accepted 29 April 2015

Academic Editor: Valery Sbitnev

Copyright © 2015 Ni Sheng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The Calculation of Road Traffic Noise (CRTN) model is one of the first traffic noise prediction models in the world and has been widely used in many Western countries. However, its performance in a motorcycle city has not been well assessed. This study aims to examine the accuracy of the CRTN model in predicting traffic noise in an Asian city with over half of motor vehicles being motorcycles. The performance of the CRTN model in predicting both roadside and vertical distributions of traffic noise levels is assessed. The results show that the performance of the CRTN model is satisfactory in predicting roadside traffic noise levels, with an of 0.832 and a mean difference of +0.52 dB(A) between the measured and predicted values. The performance of the CRTN model is also satisfactory in predicting vertical distribution of traffic noise levels, with an of 0.836 and a mean difference of +0.28 dB(A) between the measured and predicted values.