Effects of rumble strip parameters on acoustics, vibration, and perception

Rumble strips aim to alert the driver of dangerous situations via acoustic and tactile stimulation. They can, however, also lead increased noise in surroundings. Strip parameters vehicle type determines size these vibratory effects. In our work, 16 rumble strip types (including with irregular spacing) were evaluated respect their effects on acoustics, vibration, perception. Interior exterior emissions caused by controlled pass-overs a car truck recorded. Annoyance, urgency, reaction time listeners tested laboratory experiment models mapping acoustics perception developed. Steering wheel seat vibrations acquired. Our results show high correlation interior noise. The loudness level was best predictor perceived annoyance urgency. Irregular spacing reduced tonality at cost difficult production process. While large variety produced sufficient effect passenger car, response lower truck. Combined low vibration levels found truck, an identification optimal for both turns out be difficult.