Traffic data from Helsinki - Data from automatic counters in API (JSON)

30.6.2021

Data containing traffic data from automatic counters in Helsinki and nearby. Counters detect volume, speed and type of vehicle.

Data in open API, which updates every 5 minutes. No identification needed.

See counters on map: https://helsinki-public.azurewebsites.net/

API can be queried e.g.:

  • Sums of traffic volumes and average speeds (km/h) per driving direction during the last hour in 5 minute intervals
  • Sums of traffic volumes and average speeds (km/h) per driving direction during the last day in 1 hour intervals
  • Sums of traffic volumes and average speeds (km/h) per driving direction during the last 30 days in 1 day intervals
  • Sums of traffic volumes from any period in 1 day interval (without driving direction)

Driving directions are presented as cardinal points (South, North, East, West).

More information in Swagger documentation. Data in JSON.

Traffic data may include flaws or shortages. Constructions sites, errors in counters or other reasons can cause shortages. In addition to shortages, flaws due to technical errors may appear usually in the form of massive volumes, which can be detected as high spikes in the data.

Additional information

Field Value
Format JSON
Published 30.06.2021