Abstract: On the basis of existing train operation control system, the TACS (train autonomous control system) based on vehicletovehicle communication breaks though the route concept of traditional interlocking, and achieves the train operation path protection through the way of wayside infrastructure management that is consistent with the route safety protection of interlocking system. Starting from the concept of line resources, the division and management of wayside infrastructure are studied, the key technologies and main functions of wayside infrastructure management are analyzed from the TACS system level that is based on vehicle-to-vehicle communication.