K trains will run every 20 minutes on weekdays also during peak times approximately between 6.30am–8.30am and 3.30pm–5.30pm as of Monday 28 June. K trains will continue to operate a reduced service until the start of the autumn timetable period, that is, 15 August.
The arrangement is caused by extensive track work in Kerava and Pukinmäki. Other changes to train services will continue throughout the summer. Read more about the changes here.