Road surface comprising individual interconnected elements

Road surface formed from individual interconnected elements, whereof each element (1, 1') has in at least one end face at least one semicircular cut-out portion (3, 3') which, together with the corresponding cut-out portion of the adjacent element (1') forms a chamber which receives a substantially cylindrical lock (2), provided with at least two catches (26), each of which interacts with a bolt (6, 6') on each element (1, 1') when the lock is secured, said bolt being anchored in the element and protruding into the cut-out portion (3, 3'), characterized in that the lock comprises one cross-sectionally circular member or two cross-sectionally semi-circular and assembled members (2a, 2b), the radius of said member or members being constant over the entire height of the member, and that each catch (26) comprises a root (27) which projects vertically downwards from the lower face of the member or members (2a, 2b) and a tooth (28) extending horizontally from the lower end thereof, the teeth extending in the same direction along the periphery of the lock (2), the top of each tooth engaging the bottom of the associated bolt (6, 6') which in turn passes below the member (2a, 2b).