This mobile bollard, which is available in a range of different colours, is used for the flexible marking of parking spaces. It is easy to move and can be stacked. Its wedge-shaped body slopes down towards the vehicle, which makes it possible to drive right up to the marking. When doing so, the field in the top section of the bollard, of a similar size to a vehicle number plate, remains visible. A recess in the base provides space for a removable concrete slab which serves to provide greater stability. If the slab is inserted as far as it will go, it disappears behind a safety edge which prevents it from accidentally slipping out.