Name: SRK_Road_Transport_Hazards
Display Field: municname
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: a { text-decoration: none; color: #464feb; } tr th, tr td { border: 1px solid #e6e6e6; } tr th { background-color: #f5f5f5; }This dataset quantifies road‑accident hazard at the municipal level by integrating road‑network classifications, slope characteristics, and weather‑related risk conditions. Road types were weighted according to their potential contribution to accident risk, based on a 10‑to‑1 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‑accident risk scores where steep terrain and adverse climatic conditions are present. Final hazard values were computed using a length‑weighted summarisation of all road segments within each municipality.The resulting dataset provides a municipal‑scale 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‑risk mitigation.
Service Item Id: 2ff12adcb9cd4d8fbe2cee7e5e8ae117
Copyright Text: SRK Consulting
Creator: Herman Booysen (hbooysen@srk.co.za)
Road Network and Hazard Analysis: SRK Consulting
Supplementary Inputs: Digital Elevation Model (slope), weather‑related incident risk indicators
Default Visibility: true
MaxRecordCount: 2000
Supported Query Formats: JSON, geoJSON, PBF
Min Scale: 0
Max Scale: 0
Supports Advanced Queries: true
Supports Statistics: true
Has Labels: false
Can Modify Layer: true
Can Scale Symbols: false
Use Standardized Queries: true
Supports Datum Transformation: true
Extent:
XMin: 28.873479941000028
YMin: -31.082629940999936
XMax: 32.944984946000034
YMax: -26.804419936999977
Spatial Reference: 4148
(4148)
Drawing Info:
Renderer:
Class Breaks Renderer:
Field: roadaccidentclasslength
Min. Value: 0.0
ClassBreakInfos:
-
Class Maximum Value: 94
Label: 0 - 94
Description: N/A
Symbol:
Style: esriSFSSolid
Color: [76, 230, 0, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
-
Class Maximum Value: 327
Label: 95 - 327
Description: N/A
Symbol:
Style: esriSFSSolid
Color: [176, 235, 0, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
-
Class Maximum Value: 534
Label: 328 - 534
Description: N/A
Symbol:
Style: esriSFSSolid
Color: [242, 198, 0, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
-
Class Maximum Value: 926
Label: 535 - 926
Description: N/A
Symbol:
Style: esriSFSSolid
Color: [247, 103, 0, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
-
Class Maximum Value: 1393
Label: 927 - 1393
Description: N/A
Symbol:
Style: esriSFSSolid
Color: [255, 0, 0, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
Transparency: 0
Labeling Info:
Advanced Query Capabilities:
Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true
HasZ: false
HasM: false
Has Attachments: false
HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText
Type ID Field: null
Fields:
-
OBJECTID
(
type: esriFieldTypeOID, alias: OBJECTID_1
)
-
province
(
type: esriFieldTypeString, alias: PROVINCE, length: 50
)
-
category
(
type: esriFieldTypeString, alias: CATEGORY, length: 5
)
-
municname
(
type: esriFieldTypeString, alias: MUNICNAME, length: 100
)
-
district_n
(
type: esriFieldTypeString, alias: DISTRICT_N, length: 100
)
-
value
(
type: esriFieldTypeString, alias: VALUE, length: 100
)
-
sum_accidenthazard
(
type: esriFieldTypeDouble, alias: Sum AccidentHazard
)
-
length
(
type: esriFieldTypeDouble, alias: length
)
-
roadaccidentclasslength
(
type: esriFieldTypeBigInteger, alias: RoadAccidentClassLength
)
-
Shape
(
type: esriFieldTypeGeometry, alias: Shape
)
-
Shape.STArea()
(
type: esriFieldTypeDouble, alias: Shape.STArea()
)
-
Shape.STLength()
(
type: esriFieldTypeDouble, alias: Shape.STLength()
)
Supported Operations:
Query
Query Attachments
Query Analytic
Generate Renderer
Return Updates
Iteminfo
Thumbnail
Metadata