{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.noise-barrier","code":"thing-q601510","url":"https://ver.cy/models/thing/q601510/","name":"noise barrier","alternateNames":[],"kind":"thing","status":"research-draft","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"","entryKind":"","plane":"","domain":["PHY.BLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A structure built beside a road, railway or industrial site to reduce noise reaching nearby homes and areas by blocking, absorbing or deflecting sound, made of concrete, timber, metal, transparent panels, earth berms or vegetation-covered systems; noise barriers are designed by acoustic modelling to standards for insertion loss, are required by environmental noise regulation in many countries, and are assessed for cost, visual impact and durability.","purpose":"Let an agent explain how noise barriers work and are designed, identify kinds and materials, relay standards and regulation, and distinguish barriers from other noise control measures.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Acoustic design","Height and length determine effect","Materials and finishes","Regulatory driver"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"How barriers work.","layers":[{"id":"principle","name":"Principle","description":"Acoustic principle.","findings":[{"id":"principle-finding","name":"Principle","description":"Principle.","questions":[{"text":"How does a noise barrier reduce sound, and what limits its effect?","kind":"definition"},{"text":"Is the structure a noise barrier or another wall or fence?","kind":"boundary"}]}]},{"id":"kinds","name":"Kinds","description":"Kinds and materials.","findings":[{"id":"kinds-finding","name":"Kinds","description":"Kinds.","questions":[{"text":"What kinds of barrier exist, and how do materials affect performance?","kind":"definition"},{"text":"Which entry fits the specific kind?","kind":"action"}]}]}]},{"id":"design","name":"Design","description":"Design and standards.","layers":[{"id":"design","name":"Design","description":"Design.","findings":[{"id":"design-finding","name":"Design","description":"Design.","questions":[{"text":"How are barriers designed with acoustic modelling, and what standards apply?","kind":"provenance"},{"text":"Is the question site-specific, which needs an acoustic engineer?","kind":"boundary"}]}]},{"id":"regulation","name":"Regulation","description":"Regulation.","findings":[{"id":"regulation-finding","name":"Regulation","description":"Regulation.","questions":[{"text":"When do noise regulations require barriers, and who pays?","kind":"provenance"},{"text":"Which entry fits environmental noise regulation?","kind":"action"}]}]}]},{"id":"compare","name":"Compare","description":"Alternatives and effects.","layers":[{"id":"alternatives","name":"Alternatives","description":"Other measures.","findings":[{"id":"alternatives-finding","name":"Alternatives","description":"Alternatives.","questions":[{"text":"How do barriers compare with quiet pavements, speed limits and insulation?","kind":"provenance"},{"text":"Which entry fits noise control?","kind":"action"}]}]},{"id":"impacts","name":"Impacts","description":"Impacts.","findings":[{"id":"impacts-finding","name":"Impacts","description":"Impacts.","questions":[{"text":"What are the visual, ecological and community effects of barriers, with findings attributed?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]},{"id":"context","name":"Context","description":"History and innovation.","layers":[{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How did noise barriers develop with motorway construction?","kind":"provenance"},{"text":"Which entry fits the history of road engineering?","kind":"action"}]}]},{"id":"innovation","name":"Innovation","description":"Innovation.","findings":[{"id":"innovation-finding","name":"Innovation","description":"Innovation.","questions":[{"text":"What innovations exist, such as photovoltaic and green barriers?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["explain acoustic principles","identify kinds and materials","relay standards and regulation","compare with other noise measures"],"mustNot":[],"requiresHuman":[]},"ethics":{"considerations":[],"affectedParties":[]},"owners":{"steward":"","roles":[],"masterSystems":[]},"relations":[{"target":"noise control structure","type":"related","note":"in registry terms"},{"target":"built structure","type":"related","note":"in registry terms"},{"target":"environmental noise","type":"related","note":"from transport"},{"target":"acoustic engineering","type":"related","note":"the discipline"}],"interaction":{"identity":{"applicability":"required","items":[]},"properties":{"applicability":"required","items":["typical insertion loss: about 5-15 dB - depending on height and geometry"]},"recognition":{"applicability":"required","items":["Wall or berm beside a noise source","Reflective, absorptive or earth forms","Fences and retaining walls are not designed for acoustics; quiet pavements and insulation are other measures","A wall or berm running alongside a road or railway, of panels or earth, sometimes transparent or planted."]},"capabilities":{"applicability":"required","items":["explain acoustic principles","identify kinds and materials","relay standards and regulation","compare with other noise measures"]},"hazards":{"applicability":"required","items":["Insufficient height or gaps reducing effect","Reflection increasing noise elsewhere","Structural or maintenance failure","Visual and community impact"]},"interfaces":{"applicability":"required","items":["Environmental noise directives and national noise limits","European standards for road traffic noise reducing devices","Highway design standards","Structural and wind load codes"]},"context":{"applicability":"required","items":["Reducing environmental noise from transport and industry.","reflective barriers","absorptive barriers","earth berms and bunds","transparent barriers","vegetated and green barriers","railway and industrial barriers","barriers with photovoltaic panels"]}},"sources":[],"openQuestions":["Should earth berms be a separate entry?","How should standards be linked by country?","How should performance data be recorded?","Which entry fits the specific kind?","Which entry fits environmental noise regulation?","Which entry fits noise control?"],"resources":{"spec":"/models/things/publications/thing-q601510/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q601510/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T22:52:19Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"derived","ethics":"missing","owners":"missing","relations":"filled","interaction.identity":"missing","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"missing"},"notes":{"agentConduct":"Affordances listed as what may be done; prohibitions collected from the text.","sources":"Written from model knowledge without web access; claims are unverified."},"score":0.735}}