Abstract: An inflatable curtain airbag includes a luminescent visual marking indicating a proper installation of a compacted airbag bundle. Luminescent materials, when exposed to electromagnetic radiation of one frequency range, emit electromagnetic radiation in a different frequency range. This emitted radiation can be automatically detected by an optical detection device. The simplest marking consists of a line extending along the length of the airbag bundle. To facilitate recognition of the marking in an automated quality control, the marking may consist of a number of parallel lines, a portion of which may be broken lines, or a row of dots lined up along the length of the bundle. When the curtain airbag is compacted to a bundle, the marking may be located anywhere on the surface of the bundle in an area facing the interior of the vehicle.