The All-Island Accessibility Mapping Tool provides an analysis of access to settlements and key service infrastructure such as transport, education and health facilities across Ireland. Accessibility score are available for Towns, Health Facilities, Education Services, Retail Outlets and Transport Services. Accessibility scores to a range of services have been developed for every residential address point on the island (approx 2.7m) based on average drive-time speeds (average speed on NAVTEC road network plus 10% urban area congestion charge). For the purposes of the mapping tool the accessibility scores have been averaged at the most detailed spatial statistical unit available – Small Areas for the Republic of Ireland (approx 18k) and Output Areas for Northern Ireland (approx 5k)