Liikennetietoa

Liikennetietoa refers to information about traffic and transport conditions that is used to inform travelers, operators, and authorities about the status of roads, public transport, and related services. It covers real-time data, historical trends, and forecasts to support planning and decision making.

The content typically includes current traffic flow and speeds, incidents (accidents, hazards), road works and closures, detours, and congestion levels. For public transport, it may describe service disruptions, delays, and timetable information, along with estimated arrival and departure times. Weather-related conditions that affect travel may also be included.

Sources for liikennetietoa are diverse. They include road traffic management centers, road sensors and cameras, weather sensors, and official incident reports. In addition, data can come from GPS traces from vehicles and mobile devices, crowd-sourced reports, and timetables published by public transport operators. Data are often integrated with other information systems to produce comprehensive travel information.

Data distribution uses standardized formats and channels. Common data formats and feeds include DATEX II for road traffic information and GTFS or GTFS-real-time for public transit schedules. Information is delivered through APIs, dedicated information portals, navigation apps, broadcast media, and in-vehicle systems. Open data portals may provide access to anonymized datasets for researchers and developers.

Applications of liikennetietoa include dynamic routing in navigation systems, trip planning, real-time traveller dashboards, transport planning, and situational awareness for authorities. Challenges include ensuring timeliness, completeness, interoperability between systems, and privacy considerations. See also: DATEX II, GTFS.