{
  "openapi": "3.1.0",
  "info": {
    "title": "Yearly traffic counts by station, New South Wales query API",
    "version": "2026-10-04",
    "summary": "Filter, page and aggregate Yearly traffic counts by station, New South Wales from Transport for NSW.",
    "description": "The query API returns only the rows you ask for, as JSON, NDJSON or CSV, from the same typed rows as the files. It needs no key. The API allows 60 requests in 10 seconds from one address. Above that it answers 429 for 10 seconds with a `Retry-After` header, a `RateLimit-Policy` header and a JSON body that gives the limit. Every API answer carries the same `RateLimit-Policy`. A client should wait the `Retry-After` seconds, or read the files, which have no limit. Every JSON answer carries the version, licence and attribution. CSV and NDJSON answers carry them in response headers. Transport for NSW has not endorsed this site. The whole site is described in https://publicdata.au/openapi.json.",
    "license": {
      "name": "CC BY 4.0",
      "url": "https://creativecommons.org/licenses/by/4.0/"
    }
  },
  "servers": [
    {
      "url": "https://publicdata.au"
    }
  ],
  "externalDocs": {
    "url": "https://publicdata.au/d/nsw-traffic-volume-yearly/#query"
  },
  "tags": [
    {
      "name": "query"
    }
  ],
  "paths": {
    "/api/v1/datasets/nsw-traffic-volume-yearly/rows": {
      "get": {
        "tags": [
          "query"
        ],
        "summary": "Query Yearly traffic counts by station, New South Wales",
        "operationId": "queryRows_nsw_traffic_volume_yearly",
        "description": "Rows of Yearly traffic counts by station, New South Wales in the newest loaded version, filtered and paged. Each filter is `field=operator.value` in the query string, and every filter must match. A number or date field compares as a number or date, and a text field compares as text. Values are case-sensitive except with `ilike`. Prefix `not.` to negate a filter, as `not.eq.value`. Operators: `eq.value`, `neq.value`, `gt.value`, `gte.value`, `lt.value`, `lte.value`, `like.*text*`, `ilike.*text*`, `in.(a,b,c)`, `is.null`.",
        "parameters": [
          {
            "name": "cartodb_id",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 670946 to 1073835."
          },
          {
            "name": "station_key",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 99990015."
          },
          {
            "name": "station_id",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "traffic_direction_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0, 1, 2.",
            "examples": [
              "eq.2"
            ]
          },
          {
            "name": "traffic_direction_name",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: COUNTER, PRESCRIBED, PRESCRIBED AND COUNTER.",
            "examples": [
              "eq.PRESCRIBED AND COUNTER"
            ]
          },
          {
            "name": "cardinal_direction_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 1, 3, 5, 7, 9, 10.",
            "examples": [
              "eq.10"
            ]
          },
          {
            "name": "cardinal_direction_name",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: BOTH, EAST, EASTBOUND AND WESTBOUND, NORTH, NORTHBOUND AND SOUTHBOUND, SOUTH, WEST.",
            "examples": [
              "eq.WEST"
            ]
          },
          {
            "name": "classification_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0, 1, 2, 3.",
            "examples": [
              "eq.3"
            ]
          },
          {
            "name": "classification_type",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: ALL VEHICLES, HEAVY VEHICLES, LIGHT VEHICLES, UNCLASSIFIED.",
            "examples": [
              "eq.UNCLASSIFIED"
            ]
          },
          {
            "name": "count_type",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: TRAFFIC COUNT.",
            "examples": [
              "eq.TRAFFIC COUNT"
            ]
          },
          {
            "name": "year",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 2006 to 2026.",
            "examples": [
              "eq.2026"
            ]
          },
          {
            "name": "period",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: ALL DAYS, AM PEAK, OFF PEAK, PM PEAK, PUBLIC HOLIDAYS, SCHOOL HOLIDAYS, WEEKDAYS, WEEKENDS.",
            "examples": [
              "eq.WEEKENDS"
            ]
          },
          {
            "name": "partial_year",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "boolean."
          },
          {
            "name": "latest_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: 2017-04-30 00:00:00+00, 2017-10-31 00:00:00+00, 2018-02-28 00:00:00+00.",
            "examples": [
              "eq.2018-02-28 00:00:00+00"
            ]
          },
          {
            "name": "traffic_count",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 1 to 183074."
          },
          {
            "name": "data_start_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "data_end_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "data_duration",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 1 to 366."
          },
          {
            "name": "data_availability",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 100.",
            "examples": [
              "eq.100"
            ]
          },
          {
            "name": "data_reliability",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 100.",
            "examples": [
              "eq.100"
            ]
          },
          {
            "name": "data_quality_indicator",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0.",
            "examples": [
              "eq.0"
            ]
          },
          {
            "name": "updated_on",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string.",
            "examples": [
              "eq.2026-10-02 11:31:22.394085+00"
            ]
          },
          {
            "name": "select",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "Fields to return, comma-separated. Every field when absent."
          },
          {
            "name": "order",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "`field.asc` or `field.desc`, comma-separated. The publisher's row order when absent."
          },
          {
            "name": "limit",
            "in": "query",
            "schema": {
              "type": "integer",
              "minimum": 1,
              "maximum": 10000,
              "default": 100
            },
            "description": "Rows per page, 1 to 10,000. 100 when absent."
          },
          {
            "name": "offset",
            "in": "query",
            "schema": {
              "type": "integer",
              "minimum": 0,
              "default": 0
            },
            "description": "Rows to skip. The `next` URL in each answer sets it for you."
          },
          {
            "name": "format",
            "in": "query",
            "schema": {
              "type": "string",
              "enum": [
                "json",
                "ndjson",
                "csv"
              ],
              "default": "json"
            },
            "description": "`json`, `ndjson` or `csv`. JSON carries the provenance header, and the others carry it in response headers."
          }
        ],
        "responses": {
          "200": {
            "description": "Rows with the version, licence and attribution. `next` is the URL of the following page, or null."
          },
          "400": {
            "description": "The query names a field the dataset does not have, or a value of the wrong type."
          },
          "404": {
            "description": "The dataset or version is not loaded for queries."
          },
          "429": {
            "description": "More than 60 requests in 10 seconds from one address. Blocked for 10 seconds. Wait `Retry-After` seconds.",
            "headers": {
              "Retry-After": {
                "schema": {
                  "type": "integer"
                },
                "description": "Seconds until the block lifts."
              },
              "RateLimit-Policy": {
                "schema": {
                  "type": "string"
                },
                "description": "The limit, as \"fair-use\";q=60;w=10."
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    },
                    "status": {
                      "type": "integer",
                      "const": 429
                    },
                    "limit": {
                      "type": "integer"
                    },
                    "window_seconds": {
                      "type": "integer"
                    },
                    "block_seconds": {
                      "type": "integer"
                    },
                    "docs": {
                      "type": "string",
                      "format": "uri"
                    },
                    "files": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/datasets/nsw-traffic-volume-yearly/versions/{version}/rows": {
      "get": {
        "tags": [
          "query"
        ],
        "summary": "Query Yearly traffic counts by station, New South Wales",
        "operationId": "queryRows_nsw_traffic_volume_yearly_version",
        "description": "Rows of Yearly traffic counts by station, New South Wales in one dated version, filtered and paged. Each filter is `field=operator.value` in the query string, and every filter must match. A number or date field compares as a number or date, and a text field compares as text. Values are case-sensitive except with `ilike`. Prefix `not.` to negate a filter, as `not.eq.value`. Operators: `eq.value`, `neq.value`, `gt.value`, `gte.value`, `lt.value`, `lte.value`, `like.*text*`, `ilike.*text*`, `in.(a,b,c)`, `is.null`.",
        "parameters": [
          {
            "name": "version",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "format": "date"
            },
            "description": "A dated version loaded for queries, from the versions path. Answers for a dated version never change."
          },
          {
            "name": "cartodb_id",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 670946 to 1073835."
          },
          {
            "name": "station_key",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 99990015."
          },
          {
            "name": "station_id",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "traffic_direction_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0, 1, 2.",
            "examples": [
              "eq.2"
            ]
          },
          {
            "name": "traffic_direction_name",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: COUNTER, PRESCRIBED, PRESCRIBED AND COUNTER.",
            "examples": [
              "eq.PRESCRIBED AND COUNTER"
            ]
          },
          {
            "name": "cardinal_direction_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 1, 3, 5, 7, 9, 10.",
            "examples": [
              "eq.10"
            ]
          },
          {
            "name": "cardinal_direction_name",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: BOTH, EAST, EASTBOUND AND WESTBOUND, NORTH, NORTHBOUND AND SOUTHBOUND, SOUTH, WEST.",
            "examples": [
              "eq.WEST"
            ]
          },
          {
            "name": "classification_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0, 1, 2, 3.",
            "examples": [
              "eq.3"
            ]
          },
          {
            "name": "classification_type",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: ALL VEHICLES, HEAVY VEHICLES, LIGHT VEHICLES, UNCLASSIFIED.",
            "examples": [
              "eq.UNCLASSIFIED"
            ]
          },
          {
            "name": "count_type",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: TRAFFIC COUNT.",
            "examples": [
              "eq.TRAFFIC COUNT"
            ]
          },
          {
            "name": "year",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 2006 to 2026.",
            "examples": [
              "eq.2026"
            ]
          },
          {
            "name": "period",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: ALL DAYS, AM PEAK, OFF PEAK, PM PEAK, PUBLIC HOLIDAYS, SCHOOL HOLIDAYS, WEEKDAYS, WEEKENDS.",
            "examples": [
              "eq.WEEKENDS"
            ]
          },
          {
            "name": "partial_year",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "boolean."
          },
          {
            "name": "latest_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: 2017-04-30 00:00:00+00, 2017-10-31 00:00:00+00, 2018-02-28 00:00:00+00.",
            "examples": [
              "eq.2018-02-28 00:00:00+00"
            ]
          },
          {
            "name": "traffic_count",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 1 to 183074."
          },
          {
            "name": "data_start_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "data_end_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "data_duration",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 1 to 366."
          },
          {
            "name": "data_availability",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 100.",
            "examples": [
              "eq.100"
            ]
          },
          {
            "name": "data_reliability",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 100.",
            "examples": [
              "eq.100"
            ]
          },
          {
            "name": "data_quality_indicator",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0.",
            "examples": [
              "eq.0"
            ]
          },
          {
            "name": "updated_on",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string.",
            "examples": [
              "eq.2026-10-02 11:31:22.394085+00"
            ]
          },
          {
            "name": "select",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "Fields to return, comma-separated. Every field when absent."
          },
          {
            "name": "order",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "`field.asc` or `field.desc`, comma-separated. The publisher's row order when absent."
          },
          {
            "name": "limit",
            "in": "query",
            "schema": {
              "type": "integer",
              "minimum": 1,
              "maximum": 10000,
              "default": 100
            },
            "description": "Rows per page, 1 to 10,000. 100 when absent."
          },
          {
            "name": "offset",
            "in": "query",
            "schema": {
              "type": "integer",
              "minimum": 0,
              "default": 0
            },
            "description": "Rows to skip. The `next` URL in each answer sets it for you."
          },
          {
            "name": "format",
            "in": "query",
            "schema": {
              "type": "string",
              "enum": [
                "json",
                "ndjson",
                "csv"
              ],
              "default": "json"
            },
            "description": "`json`, `ndjson` or `csv`. JSON carries the provenance header, and the others carry it in response headers."
          }
        ],
        "responses": {
          "200": {
            "description": "Rows with the version, licence and attribution. `next` is the URL of the following page, or null."
          },
          "400": {
            "description": "The query names a field the dataset does not have, or a value of the wrong type."
          },
          "404": {
            "description": "The dataset or version is not loaded for queries."
          },
          "429": {
            "description": "More than 60 requests in 10 seconds from one address. Blocked for 10 seconds. Wait `Retry-After` seconds.",
            "headers": {
              "Retry-After": {
                "schema": {
                  "type": "integer"
                },
                "description": "Seconds until the block lifts."
              },
              "RateLimit-Policy": {
                "schema": {
                  "type": "string"
                },
                "description": "The limit, as \"fair-use\";q=60;w=10."
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    },
                    "status": {
                      "type": "integer",
                      "const": 429
                    },
                    "limit": {
                      "type": "integer"
                    },
                    "window_seconds": {
                      "type": "integer"
                    },
                    "block_seconds": {
                      "type": "integer"
                    },
                    "docs": {
                      "type": "string",
                      "format": "uri"
                    },
                    "files": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/datasets/{slug}/aggregate": {
      "get": {
        "tags": [
          "query"
        ],
        "summary": "Counts, sums, averages, minimums and maximums by group",
        "operationId": "aggregate",
        "description": "Groups and totals of any dataset in the newest loaded version. Filters work as they do on rows. Each filter is `field=operator.value` in the query string, and every filter must match. A number or date field compares as a number or date, and a text field compares as text. Values are case-sensitive except with `ilike`. Prefix `not.` to negate a filter, as `not.eq.value`. Operators: `eq.value`, `neq.value`, `gt.value`, `gte.value`, `lt.value`, `lte.value`, `like.*text*`, `ilike.*text*`, `in.(a,b,c)`, `is.null`.",
        "parameters": [
          {
            "name": "slug",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "enum": [
                "nsw-traffic-volume-yearly"
              ]
            },
            "description": "The dataset's slug, as in its page URL `/d/<slug>/`."
          },
          {
            "name": "group",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "On `aggregate`, fields to group by, comma-separated."
          },
          {
            "name": "metric",
            "in": "query",
            "schema": {
              "type": "string",
              "default": "count"
            },
            "description": "On `aggregate`, `count`, `sum.field`, `avg.field`, `min.field` or `max.field`, comma-separated. `count` when absent."
          },
          {
            "name": "cartodb_id",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 670946 to 1073835."
          },
          {
            "name": "station_key",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 99990015."
          },
          {
            "name": "station_id",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "traffic_direction_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0, 1, 2.",
            "examples": [
              "eq.2"
            ]
          },
          {
            "name": "traffic_direction_name",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: COUNTER, PRESCRIBED, PRESCRIBED AND COUNTER.",
            "examples": [
              "eq.PRESCRIBED AND COUNTER"
            ]
          },
          {
            "name": "cardinal_direction_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 1, 3, 5, 7, 9, 10.",
            "examples": [
              "eq.10"
            ]
          },
          {
            "name": "cardinal_direction_name",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: BOTH, EAST, EASTBOUND AND WESTBOUND, NORTH, NORTHBOUND AND SOUTHBOUND, SOUTH, WEST.",
            "examples": [
              "eq.WEST"
            ]
          },
          {
            "name": "classification_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0, 1, 2, 3.",
            "examples": [
              "eq.3"
            ]
          },
          {
            "name": "classification_type",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: ALL VEHICLES, HEAVY VEHICLES, LIGHT VEHICLES, UNCLASSIFIED.",
            "examples": [
              "eq.UNCLASSIFIED"
            ]
          },
          {
            "name": "count_type",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: TRAFFIC COUNT.",
            "examples": [
              "eq.TRAFFIC COUNT"
            ]
          },
          {
            "name": "year",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 2006 to 2026.",
            "examples": [
              "eq.2026"
            ]
          },
          {
            "name": "period",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: ALL DAYS, AM PEAK, OFF PEAK, PM PEAK, PUBLIC HOLIDAYS, SCHOOL HOLIDAYS, WEEKDAYS, WEEKENDS.",
            "examples": [
              "eq.WEEKENDS"
            ]
          },
          {
            "name": "partial_year",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "boolean."
          },
          {
            "name": "latest_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: 2017-04-30 00:00:00+00, 2017-10-31 00:00:00+00, 2018-02-28 00:00:00+00.",
            "examples": [
              "eq.2018-02-28 00:00:00+00"
            ]
          },
          {
            "name": "traffic_count",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 1 to 183074."
          },
          {
            "name": "data_start_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "data_end_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "data_duration",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 1 to 366."
          },
          {
            "name": "data_availability",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 100.",
            "examples": [
              "eq.100"
            ]
          },
          {
            "name": "data_reliability",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 100.",
            "examples": [
              "eq.100"
            ]
          },
          {
            "name": "data_quality_indicator",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0.",
            "examples": [
              "eq.0"
            ]
          },
          {
            "name": "updated_on",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string.",
            "examples": [
              "eq.2026-10-02 11:31:22.394085+00"
            ]
          },
          {
            "name": "order",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "`field.asc` or `field.desc`, comma-separated. The publisher's row order when absent."
          },
          {
            "name": "limit",
            "in": "query",
            "schema": {
              "type": "integer",
              "minimum": 1,
              "maximum": 10000,
              "default": 100
            },
            "description": "Rows per page, 1 to 10,000. 100 when absent."
          },
          {
            "name": "offset",
            "in": "query",
            "schema": {
              "type": "integer",
              "minimum": 0,
              "default": 0
            },
            "description": "Rows to skip. The `next` URL in each answer sets it for you."
          },
          {
            "name": "format",
            "in": "query",
            "schema": {
              "type": "string",
              "enum": [
                "json",
                "ndjson",
                "csv"
              ],
              "default": "json"
            },
            "description": "`json`, `ndjson` or `csv`. JSON carries the provenance header, and the others carry it in response headers."
          }
        ],
        "responses": {
          "200": {
            "description": "Rows with the version, licence and attribution. `next` is the URL of the following page, or null."
          },
          "400": {
            "description": "The query names a field the dataset does not have, or a value of the wrong type."
          },
          "404": {
            "description": "The dataset or version is not loaded for queries."
          },
          "429": {
            "description": "More than 60 requests in 10 seconds from one address. Blocked for 10 seconds. Wait `Retry-After` seconds.",
            "headers": {
              "Retry-After": {
                "schema": {
                  "type": "integer"
                },
                "description": "Seconds until the block lifts."
              },
              "RateLimit-Policy": {
                "schema": {
                  "type": "string"
                },
                "description": "The limit, as \"fair-use\";q=60;w=10."
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    },
                    "status": {
                      "type": "integer",
                      "const": 429
                    },
                    "limit": {
                      "type": "integer"
                    },
                    "window_seconds": {
                      "type": "integer"
                    },
                    "block_seconds": {
                      "type": "integer"
                    },
                    "docs": {
                      "type": "string",
                      "format": "uri"
                    },
                    "files": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/datasets/{slug}/versions/{version}/aggregate": {
      "get": {
        "tags": [
          "query"
        ],
        "summary": "Counts, sums, averages, minimums and maximums by group",
        "operationId": "aggregateVersion",
        "description": "Groups and totals of any dataset in one dated version. Filters work as they do on rows. Each filter is `field=operator.value` in the query string, and every filter must match. A number or date field compares as a number or date, and a text field compares as text. Values are case-sensitive except with `ilike`. Prefix `not.` to negate a filter, as `not.eq.value`. Operators: `eq.value`, `neq.value`, `gt.value`, `gte.value`, `lt.value`, `lte.value`, `like.*text*`, `ilike.*text*`, `in.(a,b,c)`, `is.null`.",
        "parameters": [
          {
            "name": "slug",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "enum": [
                "nsw-traffic-volume-yearly"
              ]
            },
            "description": "The dataset's slug, as in its page URL `/d/<slug>/`."
          },
          {
            "name": "version",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "format": "date"
            },
            "description": "A dated version loaded for queries, from the versions path. Answers for a dated version never change."
          },
          {
            "name": "group",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "On `aggregate`, fields to group by, comma-separated."
          },
          {
            "name": "metric",
            "in": "query",
            "schema": {
              "type": "string",
              "default": "count"
            },
            "description": "On `aggregate`, `count`, `sum.field`, `avg.field`, `min.field` or `max.field`, comma-separated. `count` when absent."
          },
          {
            "name": "cartodb_id",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 670946 to 1073835."
          },
          {
            "name": "station_key",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 99990015."
          },
          {
            "name": "station_id",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "traffic_direction_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0, 1, 2.",
            "examples": [
              "eq.2"
            ]
          },
          {
            "name": "traffic_direction_name",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: COUNTER, PRESCRIBED, PRESCRIBED AND COUNTER.",
            "examples": [
              "eq.PRESCRIBED AND COUNTER"
            ]
          },
          {
            "name": "cardinal_direction_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 1, 3, 5, 7, 9, 10.",
            "examples": [
              "eq.10"
            ]
          },
          {
            "name": "cardinal_direction_name",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: BOTH, EAST, EASTBOUND AND WESTBOUND, NORTH, NORTHBOUND AND SOUTHBOUND, SOUTH, WEST.",
            "examples": [
              "eq.WEST"
            ]
          },
          {
            "name": "classification_seq",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0, 1, 2, 3.",
            "examples": [
              "eq.3"
            ]
          },
          {
            "name": "classification_type",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: ALL VEHICLES, HEAVY VEHICLES, LIGHT VEHICLES, UNCLASSIFIED.",
            "examples": [
              "eq.UNCLASSIFIED"
            ]
          },
          {
            "name": "count_type",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: TRAFFIC COUNT.",
            "examples": [
              "eq.TRAFFIC COUNT"
            ]
          },
          {
            "name": "year",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 2006 to 2026.",
            "examples": [
              "eq.2026"
            ]
          },
          {
            "name": "period",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: ALL DAYS, AM PEAK, OFF PEAK, PM PEAK, PUBLIC HOLIDAYS, SCHOOL HOLIDAYS, WEEKDAYS, WEEKENDS.",
            "examples": [
              "eq.WEEKENDS"
            ]
          },
          {
            "name": "partial_year",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "boolean."
          },
          {
            "name": "latest_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string. Values: 2017-04-30 00:00:00+00, 2017-10-31 00:00:00+00, 2018-02-28 00:00:00+00.",
            "examples": [
              "eq.2018-02-28 00:00:00+00"
            ]
          },
          {
            "name": "traffic_count",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 1 to 183074."
          },
          {
            "name": "data_start_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "data_end_date",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string."
          },
          {
            "name": "data_duration",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From 1 to 366."
          },
          {
            "name": "data_availability",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 100.",
            "examples": [
              "eq.100"
            ]
          },
          {
            "name": "data_reliability",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. From -1 to 100.",
            "examples": [
              "eq.100"
            ]
          },
          {
            "name": "data_quality_indicator",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "integer. Values: 0.",
            "examples": [
              "eq.0"
            ]
          },
          {
            "name": "updated_on",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "string.",
            "examples": [
              "eq.2026-10-02 11:31:22.394085+00"
            ]
          },
          {
            "name": "order",
            "in": "query",
            "schema": {
              "type": "string"
            },
            "description": "`field.asc` or `field.desc`, comma-separated. The publisher's row order when absent."
          },
          {
            "name": "limit",
            "in": "query",
            "schema": {
              "type": "integer",
              "minimum": 1,
              "maximum": 10000,
              "default": 100
            },
            "description": "Rows per page, 1 to 10,000. 100 when absent."
          },
          {
            "name": "offset",
            "in": "query",
            "schema": {
              "type": "integer",
              "minimum": 0,
              "default": 0
            },
            "description": "Rows to skip. The `next` URL in each answer sets it for you."
          },
          {
            "name": "format",
            "in": "query",
            "schema": {
              "type": "string",
              "enum": [
                "json",
                "ndjson",
                "csv"
              ],
              "default": "json"
            },
            "description": "`json`, `ndjson` or `csv`. JSON carries the provenance header, and the others carry it in response headers."
          }
        ],
        "responses": {
          "200": {
            "description": "Rows with the version, licence and attribution. `next` is the URL of the following page, or null."
          },
          "400": {
            "description": "The query names a field the dataset does not have, or a value of the wrong type."
          },
          "404": {
            "description": "The dataset or version is not loaded for queries."
          },
          "429": {
            "description": "More than 60 requests in 10 seconds from one address. Blocked for 10 seconds. Wait `Retry-After` seconds.",
            "headers": {
              "Retry-After": {
                "schema": {
                  "type": "integer"
                },
                "description": "Seconds until the block lifts."
              },
              "RateLimit-Policy": {
                "schema": {
                  "type": "string"
                },
                "description": "The limit, as \"fair-use\";q=60;w=10."
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    },
                    "status": {
                      "type": "integer",
                      "const": 429
                    },
                    "limit": {
                      "type": "integer"
                    },
                    "window_seconds": {
                      "type": "integer"
                    },
                    "block_seconds": {
                      "type": "integer"
                    },
                    "docs": {
                      "type": "string",
                      "format": "uri"
                    },
                    "files": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/datasets/{slug}/versions": {
      "get": {
        "tags": [
          "query"
        ],
        "summary": "The versions loaded for queries, newest first, with the URLs to query each",
        "operationId": "queryVersions",
        "parameters": [
          {
            "name": "slug",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string",
              "enum": [
                "nsw-traffic-volume-yearly"
              ]
            },
            "description": "The dataset's slug, as in its page URL `/d/<slug>/`."
          }
        ],
        "responses": {
          "200": {
            "description": "Loaded versions with row counts and URLs."
          },
          "404": {
            "description": "The dataset or version is not loaded for queries."
          },
          "429": {
            "description": "More than 60 requests in 10 seconds from one address. Blocked for 10 seconds. Wait `Retry-After` seconds.",
            "headers": {
              "Retry-After": {
                "schema": {
                  "type": "integer"
                },
                "description": "Seconds until the block lifts."
              },
              "RateLimit-Policy": {
                "schema": {
                  "type": "string"
                },
                "description": "The limit, as \"fair-use\";q=60;w=10."
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": {
                      "type": "string"
                    },
                    "status": {
                      "type": "integer",
                      "const": 429
                    },
                    "limit": {
                      "type": "integer"
                    },
                    "window_seconds": {
                      "type": "integer"
                    },
                    "block_seconds": {
                      "type": "integer"
                    },
                    "docs": {
                      "type": "string",
                      "format": "uri"
                    },
                    "files": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}
