The lane divider is formed by a number of base elements (111), which are constructed as solid elements and are produced for example from recylcing plastic. They are arranged in a row in their longitudinal direction and are each positively connected to one another by means of a coupling device (126), so that they produce a continuous wall. The base elements (111) have a bottom part and a back part which projects upwards thereon. The bottom part is relatively low and wide and has on both sides obliquely descending upper sides. The back part is relatively narrow and high with parallel side walls. A row of mounting elements (112) can be mounted onto the row of the base elements (111) so that the divider reaches a greater overall height. The mounting elements (112) are constructed similarly to the back parts of the base elements (111). They are arranged offset by half a length and are firmly connected to the base elements (111). <IMAGE>
