A personal safety device is provided. The fastening flange has at least one radially movable arresting block, which, in a fastening position of the fastening flange, engages in a corresponding radial recess of the steering column jacket. 8 micron to 15 micron range\u2014and frequency\u2014typically in the 0. The color sources may be selectively turned onoff or driven with variable amounts of power. In addition, an integrated circuit article containing a crosslinked polyarylene polymer with reduced coefficient of thermal expansion at high temperatures is provided. A three-dimensional image generating unit displays the related image related to music played back in the past along with the related image related to the music currently played back, arranging the images in a three-dimensional space.