--- title: Traffic volume estimates on state roads, South Australia resource: https://publicdata.au/d/sa-traffic-volumes/ publisher: Department for Infrastructure and Transport licence: CC BY 4.0 licence_url: https://creativecommons.org/licenses/by/4.0/ version: 2026-09-24 rows: 2721 fields: 15 source: https://data.sa.gov.au/data/dataset/e5d6588a-f163-4f6a-bc57-25e95c87b5bd/resource/0f8ace99-aa5e-4869-99eb-72d42992f86a/download/trafficvolumeestimates2026_shp.zip source_sha256: 3accd7d787da33c13959c2de4e47c8f6c9555568db2ba83315489740551db2f8 language: en-AU operator: National Digital not_endorsed: true --- # Traffic volume estimates on state roads, South Australia The estimated annual average daily traffic on each section of South Australia's sealed state roads, with commercial vehicle counts by class, from the newest yearly snapshot. Published by Department for Infrastructure and Transport under CC BY 4.0 and republished here in other formats, with cells typed and suppressed values made null. Department for Infrastructure and Transport has not endorsed this site. Also called: SA Traffic Volume Estimates, South Australian annual average daily traffic, DIT traffic counts by road section, Adelaide road traffic volumes. ## Download Latest version, redirects to `https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/`: - csv: https://publicdata.au/d/sa-traffic-volumes/latest/data.csv (196 KB) - xlsx: https://publicdata.au/d/sa-traffic-volumes/latest/data.xlsx (200 KB) - json: https://publicdata.au/d/sa-traffic-volumes/latest/data.json (853 KB) - geojson: https://publicdata.au/d/sa-traffic-volumes/latest/data.geojson (7.7 MB) - parquet: https://publicdata.au/d/sa-traffic-volumes/latest/data.parquet (2.6 MB) - sqlite: https://publicdata.au/d/sa-traffic-volumes/latest/data.sqlite (242 KB) - duckdb: https://publicdata.au/d/sa-traffic-volumes/latest/data.duckdb (400 KB) - gpkg: https://publicdata.au/d/sa-traffic-volumes/latest/data.gpkg (3.5 MB) - pmtiles: https://publicdata.au/d/sa-traffic-volumes/latest/data.pmtiles (1.5 MB) - ndjson: https://publicdata.au/d/sa-traffic-volumes/latest/data.ndjson (849 KB) - arrow: https://publicdata.au/d/sa-traffic-volumes/latest/data.arrow (94 KB) - csv.gz: https://publicdata.au/d/sa-traffic-volumes/latest/data.csv.gz (62 KB) Pinned version 2026-09-24: `https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/data.`. Dated versions never change. ## Query 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. Rows: https://publicdata.au/api/v1/datasets/sa-traffic-volumes/rows. Counts and sums: https://publicdata.au/api/v1/datasets/sa-traffic-volumes/aggregate. - Rows: https://publicdata.au/api/v1/datasets/sa-traffic-volumes/rows?limit=5 - Aggregate: https://publicdata.au/api/v1/datasets/sa-traffic-volumes/aggregate?group=base_year&metric=count 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`. - `select`: Fields to return, comma-separated. Every field when absent. - `order`: `field.asc` or `field.desc`, comma-separated. The publisher's row order when absent. - `limit`: Rows per page, 1 to 10,000. 100 when absent. - `offset`: Rows to skip. The `next` URL in each answer sets it for you. - `group`: On `aggregate`, fields to group by, comma-separated. - `metric`: On `aggregate`, `count`, `sum.field`, `avg.field`, `min.field` or `max.field`, comma-separated. `count` when absent. - `format`: `json`, `ndjson` or `csv`. JSON carries the provenance header, and the others carry it in response headers. Without a version the API answers from the newest loaded version, and that answer changes when the publisher releases again. Put `versions//` before `rows` or `aggregate` for an answer that never changes. `/api/v1/datasets//versions` lists the loaded versions. 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. OpenAPI for this dataset: https://publicdata.au/d/sa-traffic-volumes/openapi.json ## Explore Charts and dashboards in the browser: https://publicdata.au/d/sa-traffic-volumes/explore/. A dashboard can be shared as a link or embedded. ## Fields | field | type | publisher's header | note | |---|---|---|---| | `road_number` | string | ROAD_NO | Kept as text to preserve leading zeros. | | `carriageway` | string | RLCWY_CODE | The side of the road, named against the direction the road's distances run. | | `section_start_km` | number | TESECN_STA | | | `section_end_km` | number | TESECN_END | | | `section_id` | number | TESECN_ID | | | `aadt` | integer | TESECN_VOL | | | `base_year` | string | TESECN_BAS | | | `projected_year` | string | TESECN_PRO | | | `commercial_vehicle_percent` | number | CV_PERCENT | | | `commercial_vehicles` | integer | NUMBER_CVS | | | `class_3_to_5` | integer | CLASS3TO5 | | | `class_6_to_9` | integer | CLASS6TO9 | | | `class_10` | integer | CLASS10 | | | `class_11` | integer | CLASS11 | | | `traffic_score` | number | TRAFFIC_SC | The publisher's figure derived from AADT and commercial vehicles. | Key: `section_id`. ## Versions - 2026-09-24: 2721 rows, 15 fields, sha256 3accd7d787da. https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/ Machine-readable: https://publicdata.au/d/sa-traffic-volumes/versions.json, https://publicdata.au/d/sa-traffic-volumes/changes.json, https://publicdata.au/d/sa-traffic-volumes/datapackage.json, https://publicdata.au/d/sa-traffic-volumes/schema.json, https://publicdata.au/d/sa-traffic-volumes/history.tar.zst ## Same subject, other publishers - [Yearly traffic counts by station, New South Wales](https://publicdata.au/d/nsw-traffic-volume-yearly/) (NSW) - [Traffic census of state-controlled roads, Queensland](https://publicdata.au/d/qld-traffic-census/) (Qld) - [Annual average daily traffic volume on declared roads, 2019, Victoria](https://publicdata.au/d/vic-traffic-volume-aadt-2019/) (Vic) - [Traffic volumes at count sites, Main Roads Western Australia](https://publicdata.au/d/wa-traffic-digest/) (WA) - [Traffic count stations, New South Wales](https://publicdata.au/d/nsw-traffic-count-stations/) (NSW) - [Traffic by hour of day and day of week, Queensland, 2025](https://publicdata.au/d/qld-traffic-by-hour-and-day/) (Qld) - [Vehicle types in road crashes, Queensland](https://publicdata.au/d/qld-road-crash-vehicle-types/) (Qld) - [Road crashes, Tasmania](https://publicdata.au/d/tas-road-crashes/) (Tas) - [Road crashes, New South Wales](https://publicdata.au/d/nsw-road-crashes/) (NSW) - [Factors in road crashes, Queensland](https://publicdata.au/d/qld-road-crash-factors/) (Qld) - [Traffic and camera offences and fines, ACT](https://publicdata.au/d/act-traffic-camera-offences/) (ACT) - [Mobile speed camera visits, ACT](https://publicdata.au/d/act-mobile-speed-camera-visits/) (ACT) ## Attribution and citation Department for Infrastructure and Transport, Government of South Australia, Traffic Volumes, https://data.sa.gov.au/data/dataset/traffic-volumes, accessed 3 October 2026, licensed under CC BY 4.0. The licence requires the publisher's attribution. We ask that you also name publicdata.au and link to the version you used. Plain text: Department for Infrastructure and Transport, Government of South Australia, Traffic Volumes, https://data.sa.gov.au/data/dataset/traffic-volumes, accessed 3 October 2026, licensed under CC BY 4.0. Serialised and versioned by National Digital at publicdata.au, https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/ Harvard: Department for Infrastructure and Transport (2026) Traffic volume estimates on state roads, South Australia, version 2026-09-24 [data set], CC BY 4.0, sourced 3 October 2026. Serialised and versioned by National Digital at publicdata.au. Available at: https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/ Markdown: Data: [Traffic volume estimates on state roads, South Australia](https://data.sa.gov.au/data/dataset/traffic-volumes), Department for Infrastructure and Transport, [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/), sourced 3 October 2026. Files: [publicdata.au](https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/) by [National Digital](https://nationaldigital.com.au/). ## Questions ### How do I download Traffic volume estimates on state roads as a CSV file? Open https://publicdata.au/d/sa-traffic-volumes/latest/data.csv. It redirects to the newest dated version, which is https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/data.csv today. The same path serves Excel, JSON, GeoJSON, Parquet, SQLite, DuckDB, GeoPackage, PMTiles, NDJSON, Arrow. A dated URL never changes, so use it when the file must stay the same. ### Can I open Traffic volume estimates on state roads in Excel? Yes. https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/data.xlsx is a workbook with the 2,721 rows on a records sheet, the field list on a second sheet and the provenance on a third. The CSV also opens in Excel. https://publicdata.au/d/sa-traffic-volumes/v/2026-09-24/data.csv.gz is the CSV at about a tenth of the size. ### How often is Traffic volume estimates on state roads updated? Infrastructure and Transport releases it yearly. This site checks the portal every week and adds a dated version when the file changes. ### Can I use Traffic volume estimates on state roads commercially? Yes. CC BY 4.0 allows commercial use, redistribution and derived works as long as the attribution is kept. The attribution string is in this page's side column and inside every file. ### Is this the official source for Traffic volume estimates on state roads? No. The publisher is Department for Infrastructure and Transport, and its page is https://data.sa.gov.au/data/dataset/traffic-volumes. This site republishes the publisher's file without changing its content. The original sits beside every version as source.zip with its SHA-256, so the two can be compared. ### What coordinate system does Traffic volume estimates on state roads use? Lines in GDA2020 (EPSG:7844), from the GDA2020 layer the publisher ships beside a GDA94 copy. The GeoJSON file uses GDA2020 as well, which differs from the WGS84 GeoJSON expects by well under a metre. ### What is in each row? One section of a state road, drawn as a line, with the road number, carriageway, the start and end of the section in kilometres along the road, its annual average daily traffic in both directions, the year it was counted and the year it was last updated, the share and number of commercial vehicles, counts by vehicle class, and the publisher's traffic score. ### What is annual average daily traffic? The publisher defines it as the traffic travelling in both directions past a roadside point over a full year, divided by the number of days in the year. ### Which year does it cover? The newest yearly snapshot, Traffic Volume Estimates 2026 at the first version. The publisher adds a snapshot each financial year, and each becomes a version here. Each section carries the year it was counted and the year its estimate was last updated, and both can be years before the snapshot. ## What this site did to the data Cells were typed, headers were renamed to snake_case and the encoding was made UTF-8. Rows were left alone. Nothing is derived. The publisher's file is beside every version as `source.zip`. ## Improve this dataset This page is built from [register/sa-traffic-volumes.yaml](https://github.com/National-Digital/publicdata.au/blob/main/register/sa-traffic-volumes.yaml) on GitHub, and a fix to it is welcome as a pull request. https://publicdata.au/contribute/ explains how.