{
  "endpoint": "/ai/road-signs/signs/W300.json",
  "canonical_url": "https://www.safetysignonline.co.za/ai/road-signs/signs/W300.json",
  "source_page": "https://www.safetysignonline.co.za/pages/road-signs-w300-series-json",
  {
  "schemaVersion": "sso-ai-road-signs-signs-w300-za-1.0",
  "endpoint": "/ai/road-signs/signs/W300.json",
  "language": "en-ZA",
  "jurisdiction": "South Africa (SADC-RTSM aligned)",
  "series": {
    "seriesId": "W300",
    "seriesName": "Symbolic warning signs",
    "class": "Warning",
    "groupName": "SYMBOLIC",
    "seriesPurpose": "W300 series signs warn road users of specific hazards or conditions ahead using symbolic representations rather than text."
  },

  "authoritativeBasis": {
    "primarySources": [
      {
        "title": "SADC Road Traffic Signs Manual (RTSM) Volume 1 – Warning Signs",
        "scopeUsed": [
          "Definition and purpose of symbolic warning signs",
          "Shape and colour requirements for warning signs",
          "Use of symbols to convey hazards without reliance on language"
        ]
      },
      {
        "title": "SADC Road Traffic Signs Manual (RTSM) Volume 4 – Warning sign plates",
        "scopeUsed": [
          "W300 series identification",
          "Symbolic hazard plate references (image-based)"
        ]
      }
    ],
    "performanceStandards": {
      "included": false,
      "note": "Material performance and retroreflective class requirements (e.g. SANS 1519) are excluded and will be introduced later."
    }
  },

  "designRules": {
    "shape": "Triangular (equilateral, point upwards)",
    "mandatoryColourSystem": {
      "permanent": {
        "background": "White",
        "symbol": "Black",
        "border": "Red",
        "finish": {
          "retroreflective": "Recommended for night-time visibility",
          "blackAreas": "Semi-matt where applicable"
        }
      },
      "temporary": {
        "background": "Yellow",
        "symbol": "Black",
        "border": "Red",
        "finish": {
          "retroreflective": "Required except for black areas",
          "blackAreas": "Semi-matt"
        }
      }
    },
    "generalNotes": [
      "W300 signs communicate hazards using standardised symbols.",
      "The triangular warning shape with red border is reserved exclusively for warning signs."
    ]
  },

  "applicationRules": {
    "whenUsed": [
      "To warn of a specific hazard or condition ahead that may not be immediately apparent",
      "To highlight risks associated with road environment, traffic, or human activity"
    ],
    "notUsedFor": [
      "Regulatory instructions or prohibitions",
      "Directional guidance through curves (W200)",
      "General road layout changes without a specific hazard focus (W100)"
    ],
    "advancePlacement": {
      "principle": "W300 signs are placed sufficiently in advance of the hazard to allow safe reaction.",
      "distanceDetermination": [
        "Operating speed",
        "Severity and nature of hazard",
        "Sight distance"
      ],
      "referenceNote": "Exact advance distances are specified in RTSM tables and diagrams and are not enumerated here."
    }
  },

  "combinationRules": {
    "supplementaryPlates": {
      "allowed": true,
      "series": "W400",
      "functions": [
        "Distance to hazard",
        "Length or extent of hazard",
        "Additional clarification where the symbol alone may be ambiguous"
      ]
    },
    "withOtherWarnings": {
      "allowed": true,
      "rule": "Where multiple hazards exist, warning signs may be combined or sequenced, prioritising the most severe hazard."
    }
  },

  "signIndex": {
    "note": "W300 sign variants are primarily defined by symbolic plates. This index lists confirmed hazard categories rather than exhaustive codes.",
    "categories": [
      {
        "categoryId": "road_surface_conditions",
        "description": "Warnings related to surface conditions affecting traction or stability.",
        "examples": [
          "Slippery road",
          "Loose gravel",
          "Uneven surface"
        ]
      },
      {
        "categoryId": "road_features",
        "description": "Warnings of physical road features.",
        "examples": [
          "Speed humps",
          "Fords",
          "Road narrows at bridge"
        ]
      },
      {
        "categoryId": "vulnerable_road_users",
        "description": "Warnings of vulnerable users likely to be present.",
        "examples": [
          "Pedestrians",
          "Children",
          "Cyclists"
        ]
      },
      {
        "categoryId": "animals",
        "description": "Warnings of animals likely to cross or be present on the roadway.",
        "examples": [
          "Wild animals",
          "Livestock"
        ]
      },
      {
        "categoryId": "traffic_conditions",
        "description": "Warnings of traffic-related hazards.",
        "examples": [
          "Queues likely",
          "Traffic signals ahead"
        ]
      },
      {
        "categoryId": "environmental_conditions",
        "description": "Warnings of environmental or natural hazards.",
        "examples": [
          "Falling rocks",
          "Crosswinds",
          "Flooding"
        ]
      }
    ]
  },

  "knownSeriesCharacteristics": {
    "languageIndependence": "Symbols enable comprehension regardless of language.",
    "hazardSpecificity": "Each sign focuses on a single, clearly identifiable hazard.",
    "riskMitigation": "Encourages drivers to reduce speed and increase vigilance."
  },

  "links": {
    "parentIndex": "/ai/road-signs.json",
    "seriesCatalogue": "/ai/road-signs/w-series.json",
    "relatedSeries": [
      "/ai/road-signs/signs/W100.json",
      "/ai/road-signs/signs/W200.json",
      "/ai/road-signs/placement.json",
      "/ai/road-signs/symbols.json"
    ]
  },

  "dataQuality": {
    "method": "Information is derived strictly from RTSM textual descriptions and the standard warning sign framework.",
    "limitations": [
      "Individual W300 sign codes (e.g. W301–W3xx) are not exhaustively listed due to image-based plate definitions.",
      "Exact symbol artwork, dimensions, and angles require plate extraction from Volume 4."
    ],
    "plannedEnhancements": [
      "Populate full W300 sign code list after plate extraction.",
      "Link each symbol to canonical pictogram IDs once symbol plates are digitised.",
      "Add SANS 1519 material and performance requirements in a later revision."
    ]
  },

  "disclaimer": "This file provides a structured description of the W300 Symbolic Warning sign series based on supplied RTSM documents. Always consult the latest official RTSM manuals and road authority approvals before implementation."
}

}