A display control device in a display system that includes an obtainer that obtains information about a segment length of a road on which a vehicle travels and information about a speed limit of the segment and also includes a displayer which creates a predetermined image according to the obtained information, and which displays the predetermined image on a display medium, the device comprising: a controller that controls the displayer so that the displayer creates a first predetermined image indicating the speed limit of a first segment and displays the first predetermined image on the display medium, based on the obtained information; and a determiner that, after the information about the speed limit of the first segment has been obtained, determines whether a segment length of a second segment is shorter than a pre-defined length, and determines whether the speed limit of a second segment differs from the speed limit of the first segment based on the obtained information, characterized in that if the determiner determines that a second-segment length, which is a segment length of a second segment, is not shorter than the pre-defined segment length and that the speed limit of the second segment differs from the speed limit of the first segment, the controller starts a first switching method wherein the controller stops displaying the speed limit of the first segment and after an elapsed first time period, the controller starts displaying a second image indicating the speed limit of the second segment, and if the determiner determines that the second-segment length is shorter than the pre-defined length, the controller starts a second switching method wherein the controller stops displaying the speed limit of the first segment and after an elapsed second time period, the controller starts displaying a second image indicating the speed limit of the second segment, the second time period being zero or more but less than the first time period. a controller that controls the displayer so that the displayer creates a first predetermined image indicating the speed limit of a first segment and displays the first predetermined image on the display medium, based on the obtained information; and a determiner that, after the information about the speed limit of the first segment has been obtained, determines whether a segment length of a second segment is shorter than a pre-defined length, and determines whether the speed limit of a second segment differs from the speed limit of the first segment based on the obtained information, characterized in that if the determiner determines that a second-segment length, which is a segment length of a second segment, is not shorter than the pre-defined segment length and that the speed limit of the second segment differs from the speed limit of the first segment, the controller starts a first switching method wherein the controller stops displaying the speed limit of the first segment and after an elapsed first time period, the controller starts displaying a second image indicating the speed limit of the second segment, and if the determiner determines that the second-segment length is shorter than the pre-defined length, the controller starts a second switching method wherein the controller stops displaying the speed limit of the first segment and after an elapsed second time period, the controller starts displaying a second image indicating the speed limit of the second segment, the second time period being zero or more but less than the first time period.