{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.circle-route","code":"thing-q145179","url":"https://ver.cy/models/thing/q145179/","name":"circle route","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.BLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A public transport route following a path approximating a circle, often forming a closed loop, such as Moscow's Koltsevaya line, Beijing Subway Line 10, the Yamanote Line in Tokyo and ring bus and tram routes; such routes can have designated termini and terminal layovers. The London Underground Circle line includes a loop and an extension to Hammersmith and is not a terminus-free closed-loop service. Circle routes connect radial lines and can reduce the need to travel through city centres, while timetable recovery arrangements depend on the service pattern.","purpose":"Let an agent explain circle routes, relay design, operational challenges and notable examples from transport planning and operator sources, and distinguish circle routes from radial lines, orbital routes that do not form closed loops, loop terminals at the ends of lines and ring roads for cars.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["The route follows a path approximating a circle and may have designated termini.","Interchanges can connect the route with radial lines.","Timetable recovery arrangements may include terminal layovers.","Services may operate clockwise and anticlockwise."],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What a circle route is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is a circle route, and how does it differ from radial lines, orbital routes, terminal loops and ring roads?","kind":"definition"},{"text":"Is the question about planning, a specific line or travelling?","kind":"boundary"}]}]},{"id":"examples","name":"Examples","description":"Examples.","findings":[{"id":"examples-finding","name":"Examples","description":"Examples.","questions":[{"text":"Which cities have notable circle lines?","kind":"definition"},{"text":"Which entry fits the specific line?","kind":"action"}]}]}]},{"id":"planning","name":"Planning","description":"Design.","layers":[{"id":"network","name":"Network role","description":"Network role.","findings":[{"id":"network-finding","name":"Network role","description":"Network role.","questions":[{"text":"Why do planners add circle lines to radial networks?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"operations","name":"Operations","description":"Operations.","findings":[{"id":"operations-finding","name":"Operations","description":"Operations.","questions":[{"text":"How do operators manage delays without terminal recovery time?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"cases","name":"Cases","description":"Case studies.","layers":[{"id":"london","name":"London","description":"Circle line.","findings":[{"id":"london-finding","name":"London","description":"London.","questions":[{"text":"How has London s Circle line operated and changed?","kind":"provenance"},{"text":"Which entry fits Circle line (London Underground)?","kind":"action"}]}]},{"id":"moscow","name":"Moscow","description":"Koltsevaya and MCC.","findings":[{"id":"moscow-finding","name":"Moscow","description":"Moscow.","questions":[{"text":"How do Moscow s Koltsevaya line and Central Circle serve the city?","kind":"provenance"},{"text":"Which entry fits Moscow Central Circle?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Passengers.","layers":[{"id":"wayfinding","name":"Wayfinding","description":"Direction signs.","findings":[{"id":"wayfinding-finding","name":"Wayfinding","description":"Wayfinding.","questions":[{"text":"How do maps and signs show inner and outer or clockwise directions?","kind":"provenance"},{"text":"Which entry fits wayfinding?","kind":"action"}]}]},{"id":"current","name":"Current service","description":"Current service.","findings":[{"id":"current-finding","name":"Current service","description":"Current service.","questions":[{"text":"Is a given circle service currently operating as a full loop, checked against operator sources?","kind":"provenance"},{"text":"Is the information current?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["Describe how circle routes work and how they link radial lines.","Give passengers clear direction information, such as clockwise or anticlockwise, from current timetables."],"mustNot":["Present stale route or timetable information as current.","Give directions that send passengers the long way round a loop without saying so.","Change service on a loop the agent controls without accounting for delays that spread around it."],"requiresHuman":["Changing or suspending service on a circle route."]},"ethics":{"considerations":["Loop routes serve people crossing a city without passing the centre, often those with fewer options."],"affectedParties":["Passengers","Transport workers"]},"owners":{"steward":"The public transport operator or transport authority.","roles":[],"masterSystems":[]},"relations":[{"target":"Q125209036","type":"parent","note":"registry parent class"},{"target":"public transport route","type":"related","note":"in registry terms"},{"target":"Yamanote Line","type":"related","note":"instance"},{"target":"radial route","type":"related"},{"target":"ring road","type":"related"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.circle-route","Wikidata: Q145179 (https://www.wikidata.org/wiki/Q145179)"]},"properties":{"applicability":"required","items":["Moscow Koltsevaya line: opened 1950-1954 note","Yamanote Line loop: about 34.5 km - Tokyo","registry parent: public transport route note"]},"recognition":{"applicability":"required","items":["A circle route follows a roughly circular public transport path, though its service pattern may include termini or extensions.","Circle line, loop line, ring line and circular route are related labels whose operating patterns require verification.","Radial lines run to the centre, orbital routes may be partial arcs, terminal loops turn vehicles at line ends and ring roads carry cars.","Shown as a circle or loop on transit maps."]},"capabilities":{"applicability":"required","items":["explain design","relay operational challenges","describe notable examples","distinguish related route types"]},"hazards":{"applicability":"required","items":["Delay propagation around loops","Passenger confusion about direction","Stale route information"]},"interfaces":{"applicability":"required","items":["Transit service planning guidelines","Railway operating rules"]},"context":{"applicability":"required","items":["Connecting radial lines around a city.","metro circle lines","circular railways","ring tram routes","orbital bus routes"]}},"sources":[{"title":"Wikidata item Q145179: circle route","url":"https://www.wikidata.org/wiki/Q145179","note":"identity and sense of the item"},{"title":"Wikipedia: Circle route","url":"https://en.wikipedia.org/wiki/Circle_route","note":"general description of the item"}],"openQuestions":["Should notable circle lines be linked as instances?","How should operator data be linked?","Should orbital routes be a separate entry?"],"resources":{"spec":"/models/things/publications/thing-q145179/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q145179/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T23:30:27Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:26+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}