Completed in 1980, length 24.2 km from Keilaniemi to Itäkeskus. The bridge over the railway was completed as early as 1965 to facilitate traffic from Hagalundintie to Turuntie. Ring Road I mostly serves intra-regional traffic. It is the busiest road in Finland: on weekdays in Pakila more than 90,000 vehicles a day and here too about 70,000.