Combined with the low vibration levels found in the truck, an identification of an optimal strip type for both vehicle types turns out to be difficult. While a large variety of strip types produced a sufficient acoustic effect in the passenger car, the acoustic response was lower in the truck.

Irregular spacing reduced the tonality at the cost of a difficult production process. The loudness level was the best predictor of perceived annoyance and urgency. Our results show a high correlation of interior and exterior noise. Steering wheel and seat vibrations were acquired. Annoyance, urgency, and reaction time of 16 listeners were tested in a laboratory experiment and models mapping acoustics to perception were developed. Interior and exterior emissions caused by controlled pass-overs of a car and a truck were recorded. In our work, 16 rumble strip types (including strips with irregular spacing) were evaluated with respect to their effects on acoustics, vibration, and perception. Strip parameters and the vehicle type determines the size of these acoustic and vibratory effects. They can, however, also lead to increased noise in the surroundings.

* Corresponding author: strips aim to alert the driver of dangerous situations via acoustic and tactile stimulation. Institute of Transportation, TU Wien, 1040 Vienna, Austria Kasess 1 *, Thomas Maly 2, Piotr Majdak 1 and Holger Waubke 1Īcoustics Research Institute, Austrian Academy of Sciences, 1040 Vienna, Austria

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