{ "model": { "rank": 10322, "code": "thing-q8010", "model_id": "vr.tr.pedestrian-crossing", "name": "pedestrian crossing", "purpose": "Let an agent explain crossing types, road user rules, accessibility features and how to request improvements, with road safety first.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.BLT", "industry": "", "version": "", "url": "/models/thing/q8010/", "tier": 2, "score": 45, "payload": { "layer": "wikidata", "aliases": [ "refuge island", "raised pedestrian crossing", "formal pedestrian crossing", "pegasus crossing", "pelican crossing", "puffin crossing", "zebra crossing", "Shabbat pedestrian crossing", "toucan crossing", "smart zebra crossing", "Rainbow crossing", "\"three-dimensional\" zebra crossing" ], "aliasCount": 12, "merged": 13, "knownIn": 45, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q8010", "url": "https://www.wikidata.org/wiki/Q8010", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T13:47:58Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 1, "engine": "claude" }, "metaModel": { "id": "THING-Q8010", "registryId": "vr.tr.pedestrian-crossing", "name": "pedestrian crossing", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.BLT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q8010/", "model": { "registry_id": "vr.tr.pedestrian-crossing", "name": "pedestrian crossing", "purpose": "Let an agent explain crossing types, road user rules, accessibility features and how to request improvements, with road safety first.", "definition": "A designated place where pedestrians cross a road, marked or controlled to give them priority or a protected crossing time, such as zebra, signal-controlled, puffin, toucan and pegasus crossings, raised crossings and refuge islands, with accessibility features like tactile paving and audible signals.", "what_it_is_for": "Safe road crossing for pedestrians.", "affordances": [ "explain crossing types and rules", "find accessibility features", "report faulty signals", "request a new or improved crossing" ], "distinguishing_features": [ "Designated crossing point", "Rules give priority or signals", "Accessibility features", "Designed by highway authorities" ], "appearance": "Painted stripes, signals, beacons, raised tables and islands at road crossings.", "visual_identification": [ "Zebra stripes or signal heads", "Tactile paving and push buttons", "Uncontrolled crossings give less protection" ], "physical_properties": [], "families_and_kinds": [ "zebra crossings", "signal-controlled crossings", "puffin, toucan and pegasus crossings", "raised crossings", "refuge islands" ], "related_models": [ { "relation": "is a kind of", "target": "transport infrastructure", "why": "category" }, { "relation": "is part of", "target": "thoroughfare", "why": "road" }, { "relation": "is used by", "target": "pedestrian", "why": "user" }, { "relation": "is related to", "target": "bikeway", "why": "related infrastructure" } ], "identifiers": [], "standards_and_regulation": [ "Traffic signs regulations and highway codes", "Accessibility standards for crossings", "Vienna Convention on Road Signs and Signals" ], "failure_modes_and_hazards": [ "Collisions at crossings", "Faulty signals or worn markings", "Inaccessible crossings" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "types", "name": "Types", "description": "Crossing types.", "rationale": "Types have rules.", "layers": [ { "id": "identify", "name": "Identify", "description": "Which crossing.", "findings": [ { "id": "identify-finding", "name": "Identify", "description": "Crossing type.", "questions": [ { "text": "What type of crossing is this, and who has priority?", "kind": "provenance" }, { "text": "How do its signals work?", "kind": "definition" } ] } ] }, { "id": "rules", "name": "Rules", "description": "Road user rules.", "findings": [ { "id": "rules-finding", "name": "Rules", "description": "Road user rules.", "questions": [ { "text": "What must drivers, cyclists and pedestrians do at this crossing, according to the highway code?", "kind": "provenance" }, { "text": "Are rules different for children or disabled people?", "kind": "provenance" } ] } ] } ] }, { "id": "access", "name": "Access", "description": "Inclusive design.", "rationale": "Access matters.", "layers": [ { "id": "features", "name": "Features", "description": "Accessibility features.", "findings": [ { "id": "features-finding", "name": "Features", "description": "Accessibility features.", "questions": [ { "text": "Does the crossing have tactile paving, audible or tactile signals and dropped kerbs?", "kind": "provenance" }, { "text": "Is the crossing time sufficient?", "kind": "boundary" } ] } ] }, { "id": "request", "name": "Request", "description": "Improvements.", "findings": [ { "id": "request-finding", "name": "Request", "description": "Requesting improvements.", "questions": [ { "text": "How can residents request a new or improved crossing?", "kind": "action" }, { "text": "Which authority decides?", "kind": "provenance" } ] } ] } ] }, { "id": "safety", "name": "Safety", "description": "Collisions and faults.", "rationale": "Safety comes first.", "layers": [ { "id": "collision", "name": "Collision", "description": "Emergencies.", "findings": [ { "id": "collision-finding", "name": "Collision", "description": "Collisions.", "questions": [ { "text": "Has a pedestrian been hit?", "kind": "boundary" }, { "text": "Should emergency services be called now?", "kind": "action" } ] } ] }, { "id": "fault", "name": "Fault", "description": "Faulty signals.", "findings": [ { "id": "fault-finding", "name": "Fault", "description": "Faults.", "questions": [ { "text": "Is a signal or beacon faulty?", "kind": "boundary" }, { "text": "How can it be reported to the highway authority?", "kind": "action" } ] } ] } ] }, { "id": "design", "name": "Design", "description": "Planning.", "rationale": "Design follows guidance.", "layers": [ { "id": "guidance", "name": "Guidance", "description": "Design standards.", "findings": [ { "id": "guidance-finding", "name": "Guidance", "description": "Design guidance.", "questions": [ { "text": "Which design guidance determines crossing type and placement?", "kind": "provenance" }, { "text": "What traffic and pedestrian counts are used?", "kind": "measurement" } ] } ] }, { "id": "data", "name": "Data", "description": "Safety data.", "findings": [ { "id": "data-finding", "name": "Data", "description": "Safety data.", "questions": [ { "text": "What do collision statistics show for this location?", "kind": "provenance" }, { "text": "Which source publishes them?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should crossing types be separate entries?", "How should national rules be localised?", "How should collision data be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "building, structure or infrastructure", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a pedestrian crossing, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain crossing types, road user rules, accessibility features and how to request improvements, with road safety first.", "characteristics": { "substance": "material", "origin": "manufactured", "agency": "inert", "mobility": "fixed", "scale": "built" }, "whatYouCanDoWithIt": [ "observed and measured", "entered, crossed or travelled along" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: refuge island, raised pedestrian crossing, formal pedestrian crossing, pegasus crossing, pelican crossing, puffin crossing, zebra crossing, Shabbat pedestrian crossing, toucan crossing, smart zebra crossing, Rainbow crossing, \"three-dimensional\" zebra crossing.", "13 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 45 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a pedestrian crossing, and on what evidence are they told apart?" ], "whatItIsMadeOf": "matter you can touch", "physicalCharacter": [ "On the scale of a building: sited rather than moved.", "Stays where it was put; moving it is a project.", "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state", "enter it, cross it, travel along it" ], "howItIsRecognised": [ "Recognised by form, materials and siting, and confirmed by address or by a register entry rather than by looking." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "refuge island", "raised pedestrian crossing", "formal pedestrian crossing", "pegasus crossing", "pelican crossing", "puffin crossing", "zebra crossing", "Shabbat pedestrian crossing", "toucan crossing", "smart zebra crossing", "Rainbow crossing", "\"three-dimensional\" zebra crossing" ] } ], "standing": "Described in 45 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 13 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one pedestrian crossing from another, and a pedestrian crossing from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a pedestrian crossing sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a pedestrian crossing from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "form-and-composition", "name": "Form, composition and condition", "description": "What a pedestrian crossing is made of, what shape and size it takes, and what state it is in.", "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.", "layers": [ { "id": "form-and-dimensions", "name": "Form and dimensions", "description": "Shape, size, mass and the ranges these take across examples at built scale.", "findings": [ { "id": "measurable-dimensions", "name": "Measurable dimensions and their units", "description": "The quantities worth recording and the units they are recorded in.", "questions": [ { "id": "measurable-dimensions-q01", "text": "What identifies and describes the dimensions of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "measurable-dimensions-q02", "text": "Who or what asserted this about the dimensions of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "measurable-dimensions-q03", "text": "What may an agent decide or do once the dimensions of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "material-and-composition", "name": "Material and composition", "description": "Materials, parts and how they are put together.", "findings": [ { "id": "parts-and-materials", "name": "Parts and materials", "description": "What a pedestrian crossing is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "parts-and-materials-q02", "text": "Who or what asserted this about the composition of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "parts-and-materials-q03", "text": "What may an agent decide or do once the composition of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "condition-and-integrity", "name": "Condition and integrity", "description": "Wear, damage, health and the difference between working and broken.", "findings": [ { "id": "condition-assessment", "name": "Condition, damage and health", "description": "How the condition of a pedestrian crossing is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "condition-assessment-q02", "text": "Who or what asserted this about the condition of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "condition-assessment-q03", "text": "What may an agent decide or do once the condition of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "place-and-movement", "name": "Place and movement", "description": "Where a pedestrian crossing is, how it got there and where it may go (fixed).", "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.", "layers": [ { "id": "location-and-placement", "name": "Location and placement", "description": "Position, containment and the reference frame the position is given in.", "findings": [ { "id": "position-and-frame", "name": "Position, container and reference frame", "description": "Where a pedestrian crossing is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "position-and-frame-q02", "text": "Who or what asserted this about the location of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "position-and-frame-q03", "text": "What may an agent decide or do once the location of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "movement-and-transfer", "name": "Movement and transfer", "description": "How a pedestrian crossing is carried, installed or relocated.", "findings": [ { "id": "movement-events", "name": "Movement events and constraints", "description": "What counts as a movement, what records it and what limits it.", "questions": [ { "id": "movement-events-q01", "text": "What identifies and describes the movement of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "movement-events-q02", "text": "Who or what asserted this about the movement of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "movement-events-q03", "text": "What may an agent decide or do once the movement of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a pedestrian crossing passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a pedestrian crossing between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a pedestrian crossing, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a pedestrian crossing is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "use-and-operation", "name": "Use and operation", "description": "What can be done with a pedestrian crossing and what it takes to do it.", "rationale": "An agent that can recognise a thing but not act on it has only half a model.", "layers": [ { "id": "intended-use", "name": "Intended use and function", "description": "What a pedestrian crossing is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a pedestrian crossing performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "function-and-purpose-q02", "text": "Who or what asserted this about the use of a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "function-and-purpose-q03", "text": "What may an agent decide or do once the use of a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "handling-and-procedure", "name": "Handling and procedure", "description": "The steps, skills and tools involved in using a pedestrian crossing.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a pedestrian crossing at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "procedures-and-skills-q02", "text": "Who or what asserted this about handling a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "procedures-and-skills-q03", "text": "What may an agent decide or do once handling a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "structure-and-capacity", "name": "Structure, materials and capacity", "description": "How pedestrian crossing is built and how much it can take.", "rationale": "Capacity and structural type govern what may lawfully happen inside or on it, and both are attested rather than obvious.", "layers": [ { "id": "construction", "name": "Construction and materials", "description": "Structural type, materials and principal dimensions.", "findings": [ { "id": "construction-record", "name": "Structural type and dimensions", "description": "What it is made of and how big it is.", "questions": [ { "id": "construction-record-q01", "text": "What structural type and materials characterise pedestrian crossing, and what are its principal dimensions?", "kind": "measurement" }, { "id": "construction-record-q02", "text": "What in that construction limits how it may be altered?", "kind": "boundary" } ] } ] }, { "id": "capacity-and-load", "name": "Capacity and load", "description": "Occupancy, load ratings and their basis.", "findings": [ { "id": "capacity-record", "name": "Rated capacity and who set it", "description": "The limits and the authority that certified them.", "questions": [ { "id": "capacity-record-q01", "text": "What capacity or load is pedestrian crossing rated for, under which code, certified by whom?", "kind": "provenance" }, { "id": "capacity-record-q02", "text": "What must an agent refuse to permit beyond that rating?", "kind": "action" } ] } ] } ] }, { "id": "tenure-and-condition", "name": "Ownership, permitting and condition", "description": "Who holds pedestrian crossing, what it is permitted for, and what state it is in.", "rationale": "A structure is not the organisation that uses it, and its permission to exist is separate from its condition.", "layers": [ { "id": "tenure", "name": "Ownership and permission", "description": "Title, occupancy and the permits in force.", "findings": [ { "id": "tenure-record", "name": "Title, occupier and permits", "description": "Who owns, who occupies, and what is permitted.", "questions": [ { "id": "tenure-record-q01", "text": "Who owns and who occupies pedestrian crossing, and which permits or consents are in force?", "kind": "definition" }, { "id": "tenure-record-q02", "text": "What distinguishes the structure from the organisation that operates in it?", "kind": "boundary" } ] } ] }, { "id": "inspection", "name": "Condition and inspection", "description": "Inspection regime, defects and remaining service life.", "findings": [ { "id": "inspection-record", "name": "Inspections and defects", "description": "What is inspected, how often, and what was found.", "questions": [ { "id": "inspection-record-q01", "text": "What inspection regime applies to pedestrian crossing, at what interval, and by whom?", "kind": "provenance" }, { "id": "inspection-record-q02", "text": "What finding takes it out of service, and who may authorise its return?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a pedestrian crossing came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a pedestrian crossing and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a pedestrian crossing is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a pedestrian crossing, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a pedestrian crossing, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a pedestrian crossing is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 8, "layers": 17, "findings": 19, "questions": 53 } } } }