db 108 of fig2 as shown in fig4 the link data includes a link identifier two node identifiers and a plurality of attribute fields referring back to fig2 the handover administration unit 110 administrates a handover procedure when a target vehicle moves from a cell managed by a local server to a cell managed by other local server for example as shown in fig1 when the vehicle control terminal 30 is located within the area ab where the cell coverage a and the cell coverage b overlap each other the handover administration unit 110 administrates a handover procedure such that a connection between the local server 20 and the vehicle control terminal 30 is switched to a connection between the local server 20 u2032 and the vehicle control terminal 30 fig5 illustrates a detail view of the local server 20 and 20 u2032 of fig1 as shown in fig5 the local server 20 and 20 u2032 may include an interface 202 an information collection unit 204 an analysis unit 206 a sensing unit 208 and a vehicle sensing information database db 210 the interface 202 receives information on a target vehicle e g information on whether the target vehicle can move or not information on status of.