{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/replica/refs/heads/main/json-schema/replica-free-flow-speed-per-network-link.json",
  "title": "Annual Speeds per Network Link",
  "description": "One row of Replica's \"Annual Speeds per Network Link\" dataset. Derived from the published schema table at https://documentation.replicahq.com/docs/free-flow-speed-per-network-link.",
  "x-source": "https://documentation.replicahq.com/docs/free-flow-speed-per-network-link",
  "x-generated": "2026-08-02",
  "x-method": "derived",
  "x-status": "active",
  "type": "object",
  "properties": {
    "stable_edge_id": {
      "type": [
        "string",
        "null"
      ],
      "description": "A unique identifier for each road segment.",
      "examples": [
        "6544473848226082043"
      ]
    },
    "osm_id": {
      "type": [
        "string",
        "null"
      ],
      "description": "OSM Way ID (version 2021-09-01 for the 2021 data; version 2022-12-01 for the 2022 data)",
      "examples": [
        "5149900"
      ]
    },
    "street_name": {
      "type": [
        "string",
        "null"
      ],
      "description": "The common name of the network link if available. Matches the name assigned by OpenStreetMap.",
      "examples": [
        "Scenic Avenue"
      ]
    },
    "highway": {
      "type": [
        "string",
        "null"
      ],
      "description": "The classification of the link based on OpenStreetMap data if available.",
      "examples": [
        "secondary_link"
      ]
    },
    "length": {
      "type": [
        "number",
        "null"
      ],
      "description": "The length of the network link in meters.",
      "examples": [
        "29.46"
      ]
    },
    "lanes": {
      "type": [
        "integer",
        "null"
      ],
      "description": "The number of lanes in the network link.",
      "examples": [
        "2"
      ]
    },
    "heading": {
      "type": [
        "integer",
        "null"
      ],
      "description": "The heading of the network link.",
      "examples": [
        "121"
      ]
    },
    "compass_direction": {
      "type": [
        "string",
        "null"
      ],
      "description": "The compass direction of the network link.",
      "examples": [
        "SW"
      ]
    },
    "geometry": {
      "type": [
        "string",
        "null"
      ],
      "description": "Orientation of speed relative to OSM way (True: parallel, False: antiparallel).",
      "examples": [
        "LINESTRING(-122.819859 45.52401, -122.821542 45.524663, -122.82234 45.524944, -122.833081 45.529006)"
      ]
    },
    "speed_limit_mph": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Speed limit of the network link in miles per hour",
      "examples": [
        "45"
      ]
    },
    "average_speed_mph": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Average speed for the newtork link in miles per hour",
      "examples": [
        "38"
      ]
    },
    "free_flow_speed_mph": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Free flow speed for the network link in miles per hour.",
      "examples": [
        "44"
      ]
    },
    "speed_p50_mph": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Median of speeds for the network link in miles per hour.",
      "examples": [
        "40"
      ]
    },
    "speed_p85_mph": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Percentile 85 of speeds for the network link in miles per hour.",
      "examples": [
        "42"
      ]
    },
    "speed_p95_mph": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Percentile 95 of speeds for the network link in miles per hour.",
      "examples": [
        "45"
      ]
    }
  },
  "additionalProperties": true
}