trafikinformationssystem

A trafikinformationsystem (TIS) is an information system used by transport authorities and service providers to monitor, analyze, and communicate road traffic information to travelers and operators. The goal is to improve safety, reduce travel times, and manage congestion by providing timely and accurate information about current conditions and planned events.

Data sources include road-side sensors (inductive loops, cameras, radar), floating car data from vehicles and mobile devices, incident reports from responders, and data from public transport and weather services. This data is integrated and validated to produce a coherent view of traffic state.

Core processing creates real-time traffic state estimates, bottleneck detection, travel-time predictions, and incident management. Information products include live updates, travel-time forecasts, route suggestions, and alerts about incidents, roadworks, or adverse conditions.

Dissemination channels include dynamic message signs, radio and TV, websites and mobile apps, in-vehicle navigation systems, and social media. In Europe and elsewhere, standard formats such as DATEX II and Traffic Message Channel (TMC) support data exchange between source systems and consumer services.

System architecture typically centers on a traffic management center that collects data, runs control and dissemination workflows, and coordinates with road operators, public transport agencies, and emergency services. Some countries integrate trafikinformationssystem with broader mobility platforms to provide multimodal traveler information.

Issues and considerations include data quality and privacy, interoperability, and funding. When well implemented, trafikinformationssystem can reduce delays, improve safety, and support data-driven transport planning.