The route of bus 21 will change on 18 June 2018. The terminus of the route will move from Erottaja to Eira.
The bus will run continue to run between Vattuniemi and Hietalahti. In the direction of Eira, the bus will run from Hietalahdentori to Bulevardi, from where it will continue southward to Albertinkatu and via Viiskulma to itse new terminus in Eira. In the other direction, the bus will run via Viiskulma to Fredrikinkatu and Bulevardi, from where it will continue to Vattuniemi using the same route as at present.
The reason for the route change is the upgrading of Erottaja schedueld to begin in the summer.
