Problem: It should be possible to reduce the load on a
server device that controls the movement of a vehicle and to
handle a situation in which a vehicle must make an emergency stop on a hard shoulder, if one is available. Means for solving the problem: In a
server device (3) of a traffic
control system (1), a preprocessing processor (41) records a position of a vehicle (2) in a
database (5). A control information generator (42) periodically generates individual control information regarding the vehicles (2) using information in the
database (5) and transmits the individual control information. Each vehicle (2) controls the travel of that vehicle using the individual control information from the
server device (3). In the server device (3), when a vehicle (2) is present that needs to make an emergency stop on a hard shoulder, an emergency processor (43) is activated, which sets passage control areas (96 and 97) around the position of the vehicle (2) and updates the passage control areas (96 and 97).The control information generator (42) generates and transmits individual control information for deceleration or stopping for a vehicle (2) that is likely to travel in the transit control areas (96 and 97) stored in the
database (5), and generates and transmits the individual control information for an emergency stop for the vehicle (2) that performs the emergency stop.