A vehicle-installed display system for displaying two or more items of information one after another in a given display area includes a recognition time estimating unit that estimates a recognition time required for the driver to recognize information displayed in the given display area, with respect to each of the two or more items of information, and an output switching unit that switches the information displayed in the given display area from one item of information to another, based on the recognition time estimated by the recognition time estimating unit for each item of information.