{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.ice-road","code":"thing-q182555","url":"https://ver.cy/models/thing/q182555/","name":"ice road","alternateNames":["Ice roads in Estonia"],"kind":"thing","status":"published","version":"0.2.0-wave.3","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 road built on the frozen surface of a lake, river or sea, used in winter where no permanent road exists, such as in northern Canada, Russia, Scandinavia and Estonia; ice roads are opened when ice reaches a safe thickness, regulated for vehicle weight and speed, and closed as the ice weakens.","purpose":"Let an agent explain what ice roads are and how they are built and operated, relay safety rules on ice thickness, weight and speed from road authorities, and separate ice roads from winter roads on snow and from ice crossings for pedestrians.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Built on ice","Thickness and load rules","Speed limits to control ice waves","Short season, changing with climate"],"structure":{"bundles":[{"id":"what","name":"What","description":"What an ice road is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is an ice road, and how does it differ from a winter road or an ice crossing?","kind":"definition"},{"text":"Is the question about a specific road, which needs the authority?","kind":"boundary"}]}]},{"id":"where","name":"Where","description":"Where they exist.","findings":[{"id":"where-finding","name":"Where","description":"Where.","questions":[{"text":"Where are ice roads used, and how long are their seasons?","kind":"provenance"},{"text":"Which entry fits a specific road?","kind":"action"}]}]}]},{"id":"build","name":"Build","description":"Construction and operation.","layers":[{"id":"construction","name":"Construction","description":"Building.","findings":[{"id":"construction-finding","name":"Construction","description":"Construction.","questions":[{"text":"How is an ice road surveyed, thickened, cleared and marked?","kind":"provenance"},{"text":"Which entry fits ice engineering?","kind":"action"}]}]},{"id":"monitoring","name":"Monitoring","description":"Monitoring.","findings":[{"id":"monitoring-finding","name":"Monitoring","description":"Monitoring.","questions":[{"text":"How is ice thickness measured and monitored during the season?","kind":"measurement"},{"text":"Which methods are standard?","kind":"provenance"}]}]}]},{"id":"safety","name":"Safety","description":"Rules and hazards.","layers":[{"id":"rules","name":"Rules","description":"Rules.","findings":[{"id":"rules-finding","name":"Rules","description":"Rules.","questions":[{"text":"What thickness, weight and speed rules do authorities set, and why?","kind":"provenance"},{"text":"Is the user planning to cross ice now, which needs current official status?","kind":"boundary"}]}]},{"id":"hazards","name":"Hazards","description":"Hazards.","findings":[{"id":"hazards-finding","name":"Hazards","description":"Hazards.","questions":[{"text":"What are the hazards, and what emergency guidance exists?","kind":"provenance"},{"text":"Which entry fits cold water safety?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Climate and history.","layers":[{"id":"climate","name":"Climate","description":"Climate change.","findings":[{"id":"climate-finding","name":"Climate","description":"Climate.","questions":[{"text":"How is warming affecting ice road seasons, with findings attributed?","kind":"provenance"},{"text":"Which entry fits climate impacts on transport?","kind":"action"}]}]},{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"What historical ice roads are notable, such as the Road of Life?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Report official opening status, weight limits and closures of an ice road.","Record ice thickness measurements made by the responsible authority.","Warn travellers about thaw, whiteouts and changed conditions."],"mustNot":["Declare an ice road safe or open without the responsible authority's decision.","Route vehicles over ice that exceed the posted weight limit or that travel faster than the posted speed.","Send people onto an ice road after it has been closed for the season.","Present ice thickness from one point as valid for the whole route."],"requiresHuman":["Opening, closing or changing the load limit of an ice road.","Sending a vehicle or person across the ice in an emergency."]},"ethics":{"considerations":["Ice roads are lifelines for remote communities but a break-through can kill drivers.","Shorter winters threaten the access and supplies of the communities that depend on them."],"affectedParties":["Drivers and passengers","Remote and Indigenous communities","Rescue crews"]},"owners":{"steward":"The road authority or operator that builds, tests and opens the ice road each winter.","roles":[],"masterSystems":[]},"relations":[{"target":"Q4350791","type":"parent","note":"registry parent class"},{"target":"river crossing","type":"related","note":"a seasonal crossing"},{"target":"winter road","type":"related","note":"a seasonal road"},{"target":"ice","type":"related","note":"the surface"},{"target":"road authority","type":"related","note":"opening and rules"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.ice-road","Wikidata: Q182555 (https://www.wikidata.org/wiki/Q182555)"]},"properties":{"applicability":"required","items":["minimum ice thickness for light vehicles: about 20-30 cm - guidelines vary","speed limits: about 10-70 km/h - to avoid wave damage to ice","season: weeks to months time - by climate"]},"recognition":{"applicability":"required","items":["The road runs over frozen water.","Opening and closure are seasonal.","Winter roads on snow over land and pedestrian ice crossings are related but distinct.","A cleared, marked route across frozen water, often with snow banks, signs and checkpoints."]},"capabilities":{"applicability":"required","items":["explain how ice roads are built and maintained","relay safety rules and thickness guidelines","relay which ice roads exist and their seasons","distinguish ice roads from winter roads"]},"hazards":{"applicability":"required","items":["Vehicles breaking through ice","Ice waves from excess speed","Shortening seasons with warming","Whiteouts and cold exposure"]},"interfaces":{"applicability":"required","items":["Road authority ice road guidelines on thickness and loads","Vehicle weight and speed limits per road","Occupational safety rules for ice road workers"]},"context":{"applicability":"required","items":["Winter access where permanent roads do not exist.","lake and river ice roads","sea ice roads such as those in Estonia","industrial ice roads to mines","community ice roads in the Arctic","historical military ice roads such as the Road of Life"]}},"sources":[{"title":"Wikidata item Q182555: ice road","url":"https://www.wikidata.org/wiki/Q182555","note":"identity and sense of the item"},{"title":"Wikipedia: Ice road","url":"https://en.wikipedia.org/wiki/Ice_road","note":"general description of the item"}],"openQuestions":["Should winter roads on snow be a separate entry?","How should road authority guidelines be linked?","The registry entry has merged an alias for Estonian ice roads; should it be split off?"],"resources":{"spec":"/models/things/publications/thing-q182555/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q182555/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T20:28:17Z","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 2026-10-07T10:10:27+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}