Access APISource: https://opendata.transport.nsw.gov.au/dataset/speed-zonesAPI: https://api.transport.nsw.gov.au/v1/maritime/spatial?format=geojson&q=select%20*%20from%20maritime_speed_zonesFieldValueModified2021-05-31Release Date2020-04-27Identifier4253a054-b377-4b5b-83d1-71385bb6ff33LicenceCreative Commons Attribution 4.0 International (CC BY 4.0)Public Access LevelPublicData Update Policy: as needed. However, due to data update process lag from source, there may mismatch from the source data.CONTACT INFORMATION - https://www.transport.nsw.gov.au/state-transit/about-us/contact-us