Problems: Because the contractors entering and leaving through company gates tend to be concentrated in certain times of the day, the gates become crowded and distribution efficiency drops. This also causes traffic jams in the surrounding roads which inconveniences the local community. An entry/exit control system is necessary that will maintain high levels of security with regard to regular contractors while also increasing efficiency. Install an Antenna at the gates to read data (contractor's name, driver's name, truck number) from ID Tags held by the drivers, and write that data and the entry/exit time to a database. The driver does not need to leave the truck to do this. He can simply face the ID Tag in the direction of the Antenna to pass through the gate. By comparing the times read from the ID Tag when passing through the entry and exit gates, the peak traffic times inside the company grounds can be determined.