Analysis of Vehicle Vibration and Passenger Awareness of Directional Rumble Strips

Abstract

It is necessary to pursue countermeasures against wrong-way driving on expressways, because it may lead to serious accidents. We devised directional rumble strips which have different vehicle vibrations in the right way and in the wrong way. Based on the authors’ past research results using vehicle motion simulation and driving simulator, we carried out an actual vehicle running test using three types of groove shapes that varied in depth with different speed and vehicle type. The running test was composed of the measurement of vehicle vibration on the dashboard and questionnaire survey about the vibration degree for passengers after each running. Directivity of the proposed rumble strips for some vehicle types and running speeds was confirmed. The level of the vehicle vibration was found to be different with vehicle type, and some vehicle types showed larger vibration than other vehicle types even in the right way, which is a future issue.