Dataset - Helsinki Region Infoshare

Statistical API for traffic measurement data of the city of Helsinki

Traffic measurements from Helsinki which contain data of traffic volume, average speeds and the amounts of different types of vehicles, collected for different means of...
- JSON
- CSV
Intersections with traffic lights in Vantaa

The locations of crossings with traffic lights in Vantaa. The data is constantly updated. The data can be found at matti.vantaa.fi, which provides a link to ArcGIS service....
- JSON

You can also access this registry using the API (see API docs).