Demiton · Schema

gps_event contract v1

GPS events: ignition, speed, geofence crossings.

CompanyConstructionCivil EngineeringProject ManagementComplianceMCPArtificial IntelligenceOpen Contracting

Properties

Name	Type	Description
trip	number	the source trip/journey grouping the event belongs to
asset	string	the machine the event is about; the shelf's only required coordinate
device	number	the telematics unit that produced the event, distinct from the asset identity
latitude	number	GNSS-native latitude from the raw `GPS` block
operator	number	the driver/operator active on the machine
longitude	number	GNSS-native longitude from the raw `GPS` block
event_type	string	the discriminator that tells an ignition event from a speed or geofence crossing
occurred_at	string	when the event happened; the temporal coordinate
place_label	string	the human-readable location delivered by the source
geographic_area	string	the resolved geofence/area the asset was located at
coordinate_datum	string	the horizontal frame/realisation and epoch the lat/lng pair is expressed in (expected: GNSS native, WGS 84 ensemble EPSG:4326)
financial_period	string	the accounting period the event falls in; derived, no raw source field
coordinate_precision_class	string	whether the position is full precision or a reduced/precision-limited state

View JSON Schema on GitHub

JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://docs.demiton.io/registers/gps_event/v1.json",
  "title": "gps_event contract v1",
  "type": "object",
  "required": [
    "asset",
    "event_type",
    "occurred_at"
  ],
  "properties": {
    "trip": {
      "type": "number",
      "description": "the source trip/journey grouping the event belongs to",
      "x-demiton-requiredness": "optional"
    },
    "asset": {
      "type": "string",
      "description": "the machine the event is about; the shelf's only required coordinate",
      "x-demiton-requiredness": "required",
      "x-demiton-reference": true
    },
    "device": {
      "type": "number",
      "description": "the telematics unit that produced the event, distinct from the asset identity",
      "x-demiton-requiredness": "optional"
    },
    "latitude": {
      "type": "number",
      "description": "GNSS-native latitude from the raw `GPS` block",
      "x-demiton-requiredness": "optional",
      "x-demiton-unit": "degrees",
      "x-demiton-type": "decimal"
    },
    "operator": {
      "type": "number",
      "description": "the driver/operator active on the machine",
      "x-demiton-requiredness": "optional",
      "x-demiton-reference": true
    },
    "longitude": {
      "type": "number",
      "description": "GNSS-native longitude from the raw `GPS` block",
      "x-demiton-requiredness": "optional",
      "x-demiton-unit": "degrees",
      "x-demiton-type": "decimal"
    },
    "event_type": {
      "type": "string",
      "description": "the discriminator that tells an ignition event from a speed or geofence crossing",
      "x-demiton-requiredness": "required"
    },
    "occurred_at": {
      "type": "string",
      "description": "when the event happened; the temporal coordinate",
      "x-demiton-requiredness": "required",
      "format": "date-time",
      "x-demiton-type": "datetime"
    },
    "place_label": {
      "type": "string",
      "description": "the human-readable location delivered by the source",
      "x-demiton-requiredness": "optional"
    },
    "geographic_area": {
      "type": "string",
      "description": "the resolved geofence/area the asset was located at",
      "x-demiton-requiredness": "optional",
      "x-demiton-reference": true
    },
    "coordinate_datum": {
      "type": "string",
      "description": "the horizontal frame/realisation and epoch the lat/lng pair is expressed in (expected: GNSS native, WGS 84 ensemble EPSG:4326)",
      "x-demiton-requiredness": "optional"
    },
    "financial_period": {
      "type": "string",
      "description": "the accounting period the event falls in; derived, no raw source field",
      "x-demiton-requiredness": "optional",
      "x-demiton-reference": true
    },
    "coordinate_precision_class": {
      "type": "string",
      "description": "whether the position is full precision or a reduced/precision-limited state",
      "x-demiton-requiredness": "optional"
    }
  },
  "x-demiton-register-type": "gps_event",
  "x-demiton-contract-version": "1.0.3",
  "x-demiton-store": "tenant",
  "x-demiton-axes": [
    {
      "axis": "financial_period",
      "requirement": "optional",
      "role": "context"
    },
    {
      "axis": "asset",
      "requirement": "required",
      "role": "subject"
    }
  ],
  "x-demiton-measures": [],
  "x-demiton-provenance": {
    "standards": [
      {
        "code": "GDA2020 / MGA2020",
        "title": "Geocentric Datum of Australia 2020 and Map Grid of Australia 2020 (EPSG:7844 / EPSG:78xx zones)",
        "access": "public_summary",
        "region": "Australia",
        "edition": "GDA2020 = ITRF2014 at epoch 2020.0",
        "checked_on": "2026-09-14"
      },
      {
        "code": "National Measurement Act 1960 (Cth) s 8A",
        "title": "Recognized-Value Standard of Measurement of Position Determination 2017 (legal definition of GDA2020)",
        "access": "public_summary",
        "clause": "s 8A",
        "region": "Australia",
        "edition": "Determination 2017",
        "checked_on": "2026-09-14"
      },
      {
        "code": "Privacy Act 1988 (Cth)",
        "title": "Privacy Act 1988 - Australian Privacy Principles",
        "access": "full_text_verified",
        "clause": "APP 3",
        "region": "Australia",
        "edition": "APP Guidelines ch 3 v1.2 (2026-05-13)",
        "checked_on": "2026-09-14"
      },
      {
        "code": "Workplace Surveillance Act 2005 (NSW)",
        "title": "Workplace Surveillance Act 2005 (tracking surveillance of employees)",
        "access": "public_summary",
        "clause": "s 10",
        "region": "Australia",
        "edition": "in force (compilation 2025-06-14)",
        "checked_on": "2026-09-14"
      },
      {
        "code": "INSPIRE D2.8.I.1",
        "title": "INSPIRE Data Specification on Coordinate Reference Systems - Technical Guidelines (ETRS89/EVRS)",
        "access": "full_text_verified",
        "region": "European Union",
        "edition": "v3.2rc2, release 2024.1 (2024-01-31)",
        "checked_on": "2026-09-14"
      },
      {
        "code": "Regulation (EU) 2016/679 (GDPR)",
        "title": "General Data Protection Regulation (GDPR)",
        "access": "public_summary",
        "region": "European Union",
        "edition": "2016",
        "checked_on": "2026-09-14"
      },
      {
        "code": "ISO/TS 15143-3",
        "title": "Earth-moving machinery and mobile road construction machinery - Worksite data exchange - Telematics data (AEMP 2.0)",
        "access": "paywalled_secondary",
        "region": "International",
        "edition": "2020 (SA TS ISO 15143.3:2021 AU and PD ISO/TS 15143-3:2020 UK identical adoptions)",
        "checked_on": "2026-09-14"
      },
      {
        "code": "WGS 84 (EPSG:4326)",
        "title": "World Geodetic System 1984 datum ensemble (EPSG:6326)",
        "access": "full_text_verified",
        "region": "International",
        "edition": "EPSG Dataset v13.102; record revised 2022-11-29",
        "checked_on": "2026-09-14"
      },
      {
        "code": "NZGD2000 / NZTM2000",
        "title": "New Zealand Geodetic Datum 2000 and NZ Transverse Mercator 2000 (LINZ)",
        "access": "public_summary",
        "region": "New Zealand",
        "edition": "official since 1998 (NZVD2016 vertical)",
        "checked_on": "2026-09-14"
      },
      {
        "code": "ICO monitoring workers guidance",
        "title": "ICO Employment practices and data protection: monitoring workers",
        "access": "full_text_verified",
        "region": "United Kingdom",
        "edition": "current guidance (under review after the Data (Use and Access) Act)",
        "checked_on": "2026-09-14"
      },
      {
        "code": "OSGB36 / ETRS89 (OSTN15)",
        "title": "British National Grid, accessed from ETRS89 via OSTN15 (Ordnance Survey)",
        "access": "public_summary",
        "region": "United Kingdom",
        "edition": "OSTN15 / OSGM15",
        "checked_on": "2026-09-14"
      },
      {
        "code": "UK GDPR / Data Protection Act 2018",
        "title": "UK GDPR and Data Protection Act 2018",
        "access": "public_summary",
        "region": "United Kingdom",
        "edition": "as amended",
        "checked_on": "2026-09-14"
      },
      {
        "code": "49 CFR Part 395 Subpart B",
        "title": "FMCSA - Hours of Service of Drivers - Electronic Logging Devices",
        "access": "full_text_verified",
        "clause": "ss 395.26(b), (d), (i); 395.8(c), (k)",
        "region": "United States",
        "edition": "current (ELD mandate from 2017-12-18)",
        "checked_on": "2026-09-14"
      },
      {
        "code": "NAD 83 (2011)",
        "title": "North American Datum of 1983 (2011) epoch 2010.00 / NSRS (NGS)",
        "access": "public_summary",
        "region": "United States",
        "edition": "NAD 83(2011); NATRF2022 replacement not confirmed effective",
        "checked_on": "2026-09-14"
      }
    ]
  },
  "description": "GPS events: ignition, speed, geofence crossings.",
  "x-demiton-contract-url": "https://docs.demiton.io/registers/gps_event/",
  "x-demiton-register-catalog": "https://docs.demiton.io/concepts/register-catalog"
}

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