Vibrace is an aid for people who are not able to perceive important acoustic signals in road traffic due to hearing impairment. Because intact hearing promotes attentiveness and helps to avoid accidents. By emitting perceptible vibrations on the neck, Vibrace indicates the direction of a relevant sound source and the impaired person can react quickly. Using modern techniques such as laser scanning and 3D printing, the product is adjusted to the proportions of the neck and manufactured individually.