It is an important cross-section between the northern districts of the Helsinki peninsula and part of the planned Pasilanväylä.

Hakamäentie leads from Käpylä north of east and west Pasila to Haaga.

At the western end of Hakamäentie, there is a tunnel leading to Vihdintie and an interchange, to which the Mannerheimintie leading north from the center of Helsinki ends and from which also Hämeenlinnanväylä (national road 3) to the north and Vihdintie (regional road 120) to the west.

On weekdays, the average number of vehicles on the road in 2011 was 42,000 cars per day at Central Park.

[2] Media related to National road 100 (Finland) at Wikimedia Commons