The server also decides which location is best to have that car produced. Once that has been decided, the server notifies the parts makers who are on-line 3 hours before as to where the parts should be delivered. This is the type of assembly control TMC currently has. The central main computer decides the cars to be produced and the specifications and sends a message to the servers that communicate with the major parts makers who are now on- line and have similar systems, and can notify their suppliers in similar ways.