PROBLEM TO BE SOLVED: To extract (determine) a road section to be closed automatically according to a spot or section on the road where an event such as construction or accident occurs, and to assist road control making vehicles smoothly pass.SOLUTION: A road control support device 100 has: a storage part 120 for storing a road information master table RIM including a road point or road section and road closing section information including at least a vehicle gateway associated with each of the road point or road section and becoming a starting or end point of closing; an input reception part IR for receiving input of event positional information including the road point or the road section associated with the event in a control object road; an extraction part EXT for referring to the road information master table RIM on the basis of the event positional information and extracting the road closing section information; and a display DIS for displaying an extracted road closing section.
