01626772

Component

Studies have shown that rumble strips installed on a roadway significantly reduce the number of accidents caused by lane departures. However, when a vehicle engages the strips a loud exterior noise is generated in addition to the alerting in-cabin noise. The extraneous exterior noise is capable of traveling at least several hundred feet at a volume which is considered a nuisance by nearby residents. As a result, alternative sinusoidal based designs have been proposed. This work studies the sound and vibration of a 2014 Chevrolet Suburban during sinusoidal rumble strip incursions at three different wavelengths (12, 18, and 24 inch) and two different speeds (40 and 50 mph). A comparison between sinusoidal and traditional rumble strips was made and it was found that sinusoidal rumble strips are between 4 and 11 dBA quieter on the exterior of the vehicle, 1 dBA louder to 7 dBA quieter on the interior of the vehicle, and increase the in-cabin sound level by between 2 and 9 dBA as compared to no incursion. The in-cabin sound increase is within the residential land use alerting guidelines set forth by NCHRP. Sinusoidal rumbles strips are a promising technology that is well suited for lane departure warning in residential areas.

This paper was sponsored by TRB committee ADC40 Standing Committee on Transportation-Related Noise and Vibration.

01618707

17-00828

English

21p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Figures; Maps; Photos; References; Tables

Highway design; Operating speed; Rumble strips; Sine curves; Sound level; Traffic noise; Vibration; Wavelength

Design; Environment; Highways; Pavements

Transportation Research Board Annual Meeting 2017 Paper #17-00828

TRIS, TRB, ATRI

Dec 8 2016 10:11AM