Archives of Acoustics, 42, 3, pp. 449–457, 2017
10.1515/aoa-2017-0047

Exterior Noise Due to Interaction of Tire-Thermoplastic Transverse Rumble Strips

Zaiton HARON
Universiti Teknologi Malaysia
Malaysia

Mohd Hanifi OTHMAN
Universiti Tun Hussein Onn Malaysia
Malaysia

Lim Meng HEE
Universiti Teknologi Malaysia
Malaysia

Khairulzan YAHYA
Universiti Teknologi Malaysia
Malaysia

Mohd Rosli HAININ
Universiti Teknologi Malaysia
Malaysia

Nadirah DARUS
Universiti Teknologi Malaysia
Malaysia

Mohd Salman LEONG
Universiti Teknologi Malaysia
Malaysia

Transverse rumble strips (TRS) are a common choice to reduce vehicle speed and increase driver alertness on roadways. However, there is a potential trade-off using them on rural roadway due to the noise problem created when vehicles go over the strips. The present study investigated the noise level, spectral analysis, and the possible noise generation mechanism when the TRS is hit by a vehicle. Tenraised-rumbler (RR) and three-layer-overlapped (TLO) TRS were selected in this study as they have received complaints from the public. Results showed that RR generated a relatively higher noise and impulse at a low speed, and increased sound level in each octave band. Based on these results, RR may irritate human ears even when the vehicle travels at a low speed. It was found that RR increased all noise generation mechanisms of tyre-pavement interaction whilst TLO increased structural resonance, sidewall and surface texture vibration.
Keywords: transverse rumble strips; vehicle speed; noise problem
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DOI: 10.1515/aoa-2017-0047

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