pääliikenne
Pääliikenne, a Finnish term, translates to "main traffic" or "primary traffic." It refers to the most significant and important routes within a transportation network, whether that network is for road, rail, air, or even pedestrian and cycling traffic. These routes are typically characterized by high traffic volumes, frequent service, and a strategic importance for connecting major population centers, economic hubs, or critical infrastructure.
In the context of road networks, pääliikenne often encompasses major highways, motorways, and arterial roads that