Roads: OpenStreetMap motorways, trunk roads and other A roads, with their slip roads (© OpenStreetMap contributors, ODbL). Speeds by road class: motorways 62 mph, trunk 50, other A roads 40, motorway slip roads 35, other slip roads 25, capped at 85% of any posted limit of 45 mph or under. Every road is treated as two-way. 13 ferries link Northern Ireland and the larger islands, with check-in time. No traffic, junction or turn costs. People are placed from OpenStreetMap town and village populations. Outline: Natural Earth. Inspired by “All Roads Lead to Richmond” by Arterial Mapping and Ethan Mollick's US version.