SCRA Mobility Vocabulary¶

Status¶

Draft

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This section publishes the compact vocabulary terms used by the initial SCRA public transport profile and the Mobility MCP proof of concept.

Each term has an authoritative SCRA vocabulary IRI under:

https://scra-schema.org/vocab/

The machine-readable JSON-LD context is published at:

https://scra-schema.org/contexts/mobility.jsonld

Initial Passing-Event Vocabulary¶

Entity Type¶

• PassingEvent

Relationships¶

• monitoredVehicleJourney
• stop

Properties¶

• eventType
• scheduledTime
• predictedTime
• observedTime
• predictionConfidence
• observationTimestamp
• delay
• minutesUntilArrival
• referenceTime

Normative Core Public-Transport Classes¶

The following semantic classes have stable, normative SCRA vocabulary IRIs. Their semantic definitions remain in the corresponding semantic-model documents.

Entity Types¶

• ServiceJourney
• JourneyPattern
• PointInJourneyPattern
• DatedVehicleJourney
• ServiceCalendar
• DayType

Vocabulary Policy¶

SCRA reuses an existing international vocabulary term when it has compatible meaning. An SCRA term is published when no suitable term exists, when existing terms conflict, or when a harmonized term is required for reliable interoperability.

Each vocabulary term declares its own publication status. A term marked Normative defines requirements for conforming implementations. A term marked Draft remains subject to change and shall not be treated as a stable interoperability contract.

Normative Mobility Vocabulary — Phase 2 READY Set¶

These terms were promoted only after Semantic Model and NGSI-LD mapping evidence classified them as ready for stable vocabulary publication.

Entity Types¶

• MonitoredVehicleJourney
• OperatingDay
• PhysicalVehicle

Relationships¶

• assignedVehicle
• datedVehicleJourney
• dayType
• journeyPattern
• operatingDay
• route
• serviceJourney
• stop

Normative Mobility Vocabulary — Phase 3 READY Set¶

The following relationships were promoted after cross-layer review of the Semantic Models and NGSI-LD mapping.

Relationships¶

• currentPoint
• currentStop
• operatedByVehicle
• serviceCalendar

Normative Mobility Vocabulary — Phase 4 Organisation and Operator¶

Entity Types¶

• Organisation

Relationships¶

• operator

The operator relationship has normative domain PhysicalVehicle, ServiceJourney and normative range Organisation.

DatedVehicleJourney is intentionally excluded from the normative operator domain until its semantic model contains a dedicated operator definition.