Evaluation of Rumble Strip Profile Design Parameters for Driver Alerting Effectiveness and Bicyclist Accommodation

Abstract

This research paper explores rumble strip profile design parameters, critically examining their efficacy in enhancing driver alertness while simultaneously ensuring the safety and comfort of bicyclists. The core objective is to analyze existing methodologies and propose advanced techniques for optimizing these profiles to achieve a harmonious balance between conflicting demands. We explore various design variables, including the depth, width, spacing, and shape of individual indentations, and their impact on acoustic and vibratory feedback generated within vehicle cabins. Particular attention is paid to the distinct responses of different vehicle types, from passenger cars to heavy goods vehicles, and how these responses influence the perception of the alerting stimulus. The paper also investigates the critical considerations for bicyclist accommodation, focusing on minimizing discomfort, maintaining steering control, and preventing loss of balance when traversing rumble strips. A  review of current design standards across various jurisdictions will inform the discussion, highlighting best practices and areas for potential improvement. This work aims to provide a foundational understanding for developing next-generation rumble strip designs that are both highly effective in preventing roadway departure crashes and minimally intrusive for vulnerable road users, thereby contributing to a safer and more inclusive transportation infrastructure.