Ring Rail Line is an important circular rail route of the Helsinki Metropolitan Area. It is also a rail connection to the Helsinki-Vantaa airport. Ring Rail Line is a vital urban rail line that provides a high-class public transport connection within reach of 200.000 inhabitants and 200.000 work places. 
  
Ring Rail Line is a part of transport system development. The implementation of Ring Rail Line includes the rail track and related arrangements concerning stations and feeder traffic. In addition it includes required road arrangements of which the biggest is developing Highway 3 in the core area of Marja-Vantaa in Kivistö.

Ring Rail Line in figures:

• cost estimate 590 M€
• 2-track passenger line  
• maximum speed of trains 120 km/h  
• length of railway line 18 km, of which 8,1 km in tunnel 
• 5 new stations and 3 station reservations 
• 33 bridges, of which 12 railway bridges 
• 9 km street and road arrangements 
• feeder traffic parking facilities for 1550 cars and 950 bicycles 
• removal of 2,4 milj.m3 of soil and rock masses