In an automotive construction machine, in particular road milling machine (1), recycler (100), or stabilizer, with a machine frame (4) carried by a chassis (2) with preferably vertically arranged lateral outer walls (5), a milling drum (6) mounted in the machine frame (4) for working a ground surface or traffic surface (8), and with an operator's platform (10) with an operating and indicating panel (12) and a seat (14) for a machine driver, it is provided that the operator's platform (10) is moveable on the machine frame (4) transversely to the direction of travel, that the seat (14) for the machine driver is integrated into the operator's platform (10), which is moveable outwards beyond the lateral outer walls (5) of the machine frame (4), that the machine frame (4) is provided with a guide (18) for the operator's platform (10) acting transversely to the direction of travel, and that the guide (18) projects laterally either not at all or just slightly beyond the outer walls (5).