Journal Published Online: 11 October 2007
Volume 36, Issue 1

Field Evaluation of Tire-Road Noise Using a New Close Proximity Method



A new close proximity (NCPX) method has been proposed and applied for the tire-road noise characterization of highway traffic. The implementation of NCPX is based on a set of surface microphones that is attached to a vehicle to directly measure the tire noise. To consider a combined effect of vehicle and road factors, a comprehensive field test has been performed with seven vehicle types at nine pavement sections of the test road. Testing parameters also include a vehicle speed ranging from 50 to 120 km/h, and two driving modes are applied at each speed: coasting and steady. It is found that asphalt pavements are quieter than all concrete pavements irrespective of testing conditions. Among concrete pavements, an 18-mm longitudinally-tined surface exhibits the quietest noise level, while a random transversely-tined surface is ineffective in minimizing the tire noise. Finally, the effect of a heavy axle load on the tire/noise generation is discussed.

Author Information

Seung Cho, Dae
Department of Naval Architecture & Ocean Engineering, Pusan National University, Busan, Korea
Seo, Youngguk
Korea Expressway Corporation Test Road Center, Expressway & Transportation Technology Institute, Korea Expressway Corporation, Kyung-ki, Dongtan, Hwasung, Korea
Muk Choi, Tae
Createch Co., Busan, Korea
Pages: 7
Price: $25.00
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Stock #: JTE101172
ISSN: 0090-3973
DOI: 10.1520/JTE101172