A survey on road noise prediction for milled shoulder rumble strip designs

Cell phones, navigation systems and extended work hours are only some of the causes of distracted or fatigued driving, which increases the likelihood of crashes in road networks. To address this problem, Departments of Transportation (DOTs) nationwide have implemented warning devices called rumble strips, which can be installed on road pavements to alert the drivers of lane departures. While rumble strips are successful in preventing drivers from running off road, they create additional roadside noise, which sometimes becomes annoying for the residents in the vicinity. Ongoing research aims to mitigate rumble strip noise. This survey synthesises the current state of knowledge for noise assessment of rumble strips and identifies current gaps in existing techniques and associated models to guide future research efforts to best address rumble strip effectiveness.