A marker bump for placement on a traffic lane, particularly for marking a traffic lane when the course of traffic is changed at construction sites or the like, comprises links, joined in an articulated manner with one another to form a link chain and preferably having a warning color on their upper side. The links are connected with one another over a connecting link, which in each case is hinged on its own pin to the adjacent link. The two links, which are to be joined to one another, in each case having a recess for accommodating the connecting link.
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