{ "currentVersion": 11.3, "cimVersion": "3.3.0", "id": 1, "name": "SRK_Road_Transport_Hazards", "type": "Feature Layer", "description": "a { text-decoration: none; color: #464feb; } tr th, tr td { border: 1px solid #e6e6e6; } tr th { background-color: #f5f5f5; }This dataset quantifies road\u2011accident hazard at the municipal level by integrating road\u2011network classifications, slope characteristics, and weather\u2011related risk conditions. Road types were weighted according to their potential contribution to accident risk, based on a 10\u2011to\u20111 ranking system ranging from National Freeways (10) to Footpaths (1). These weights reflect relative exposure based on speed, traffic density, functional hierarchy, and complexity of movement.The weighted road network was intersected with municipal boundaries, and slope and weather modifiers were applied to adjust road\u2011accident risk scores where steep terrain and adverse climatic conditions are present. Final hazard values were computed using a length\u2011weighted summarisation of all road segments within each municipality.The resulting dataset provides a municipal\u2011scale hazard index highlighting areas where road characteristics, terrain, and weather conditions create increased accident likelihood. This layer supports provincial disaster management, emergency response planning, municipal safety profiling, infrastructure prioritisation, and transport\u2011risk mitigation.", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 4148, "latestWkid": 4148, "xyTolerance": 8.98315284119521E-9, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -400, "falseY": -400, "xyUnits": 9.999999999999999E8, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "copyrightText": "SRK Consulting\nCreator: Herman Booysen (hbooysen@srk.co.za)\nRoad Network and Hazard Analysis: SRK Consulting\nSupplementary Inputs: Digital Elevation Model (slope), weather\u2011related incident risk indicators", "parentLayer": null, "subLayers": [], "minScale": 0, "maxScale": 0, "referenceScale": 0.0, "drawingInfo": { "renderer": { "type": "classBreaks", "authoringInfo": { "type": "classedColor", "colorRamp": { "type": "algorithmic", "algorithm": "esriHSVAlgorithm", "fromColor": [ 245, 245, 0, 255 ], "toColor": [ 245, 0, 0, 255 ] }, "classificationMethod": "esriClassifyNaturalBreaks" }, "field": "roadaccidentclasslength", "classificationMethod": "esriClassifyNaturalBreaks", "minValue": 0, "classBreakInfos": [ { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 76, 230, 0, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 110, 110, 110, 255 ], "width": 0.7 } }, "classMaxValue": 94, "label": "0 - 94" }, { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 176, 235, 0, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 110, 110, 110, 255 ], "width": 0.7 } }, "classMaxValue": 327, "label": "95 - 327" }, { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 242, 198, 0, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 110, 110, 110, 255 ], "width": 0.7 } }, "classMaxValue": 534, "label": "328 - 534" }, { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 247, 103, 0, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 110, 110, 110, 255 ], "width": 0.7 } }, "classMaxValue": 926, "label": "535 - 926" }, { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 255, 0, 0, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 110, 110, 110, 255 ], "width": 0.7 } }, "classMaxValue": 1393, "label": "927 - 1393" } ], "legendOptions": {"order": "ascendingValues"} }, "scaleSymbols": true, "transparency": 0, "labelingInfo": null }, "defaultVisibility": true, "extent": { "xmin": 28.873479941000028, "ymin": -31.082629940999936, "xmax": 32.944984946000034, "ymax": -26.804419936999977, "spatialReference": { "wkid": 4148, "latestWkid": 4148, "xyTolerance": 8.983152841195215E-9, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -400, "falseY": -400, "xyUnits": 9.999999999999999E8, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 } }, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeAsHTMLText", "displayField": "municname", "typeIdField": null, "subtypeFieldName": null, "subtypeField": null, "defaultSubtypeCode": null, "fields": [ { "name": "OBJECTID", "type": "esriFieldTypeOID", "alias": "OBJECTID_1", "domain": null }, { "name": "province", "type": "esriFieldTypeString", "alias": "PROVINCE", "length": 50, "domain": null }, { "name": "category", "type": "esriFieldTypeString", "alias": "CATEGORY", "length": 5, "domain": null }, { "name": "municname", "type": "esriFieldTypeString", "alias": "MUNICNAME", "length": 100, "domain": null }, { "name": "district_n", "type": "esriFieldTypeString", "alias": "DISTRICT_N", "length": 100, "domain": null }, { "name": "value", "type": "esriFieldTypeString", "alias": "VALUE", "length": 100, "domain": null }, { "name": "sum_accidenthazard", "type": "esriFieldTypeDouble", "alias": "Sum AccidentHazard", "domain": null }, { "name": "length", "type": "esriFieldTypeDouble", "alias": "length", "domain": null }, { "name": "roadaccidentclasslength", "type": "esriFieldTypeBigInteger", "alias": "RoadAccidentClassLength", "domain": null }, { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "Shape", "domain": null }, { "name": "Shape.STArea()", "type": "esriFieldTypeDouble", "alias": "Shape.STArea()", "domain": null }, { "name": "Shape.STLength()", "type": "esriFieldTypeDouble", "alias": "Shape.STLength()", "domain": null } ], "geometryField": { "name": "Shape", "type": "esriFieldTypeGeometry", "alias": "Shape" }, "indexes": [ { "name": "R1968_pk", "fields": "OBJECTID", "isAscending": true, "isUnique": true, "description": "" }, { "name": "S1741_idx", "fields": "Shape", "isAscending": true, "isUnique": true, "description": "" } ], "subtypes": [], "relationships": [], "canModifyLayer": true, "canScaleSymbols": false, "hasLabels": false, "capabilities": "Map,Query,Data", "maxRecordCount": 2000, "supportsStatistics": true, "supportsExceedsLimitStatistics": true, "supportsAdvancedQueries": true, "supportedQueryFormats": "JSON, geoJSON, PBF", "isDataVersioned": false, "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "supportedSpatialRelationships": [ "esriSpatialRelIntersects", "esriSpatialRelContains", "esriSpatialRelCrosses", "esriSpatialRelEnvelopeIntersects", "esriSpatialRelIndexIntersects", "esriSpatialRelOverlaps", "esriSpatialRelTouches", "esriSpatialRelWithin", "esriSpatialRelRelation" ], "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": true, "supportsPercentileStatistics": true, "supportsHavingClause": true, "supportsOrderBy": true, "supportsDistinct": true, "supportsCountDistinct": true, "supportsAdvancedQueryRelated": true, "supportsQueryRelatedPagination": true, "supportsPagination": true, "supportsLod": false, "supportsQueryWithLodSR": false, "supportsTrueCurve": true, "supportsQueryWithDatumTransformation": true, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true, "supportsSqlExpression": true, "supportsTimeRelation": true, "supportsSqlFormat": false, "supportsQueryAnalytic": true, "supportsCurrentUserQueries": true }, "supportsDatumTransformation": true, "advancedQueryAnalyticCapabilities": { "supportsLinearRegression": true, "supportsAsync": false, "supportsPercentileAnalytic": true }, "dateFieldsTimeReference": null, "preferredTimeReference": null, "datesInUnknownTimezone": false, "hasGeometryProperties": true, "geometryProperties": { "shapeAreaFieldName": "Shape.STArea()", "shapeLengthFieldName": "Shape.STLength()", "units": "esriDecimalDegrees", "mapUnits": {"uwkid": 9102} }, "hasMetadata": true, "isDataArchived": false, "archivingInfo": { "supportsQueryWithHistoricMoment": false, "startArchivingMoment": -1 }, "supportsCoordinatesQuantization": true, "supportsDynamicLegends": true, "serviceItemId": "2ff12adcb9cd4d8fbe2cee7e5e8ae117" }