Transportation and traffic planning, a part of land-use planning, includes all modes of transportation: public transport, vehicular traffic, parking, as well as cycling and pedestrian networks. In Helsinki’s planning one of the top priorities is to promote the fluency and service level of public transport. Improving traffic safety is also a central objective in all planning.

The City Planning Board renders most of the decisions concerning designs prepared by the Transportation and Traffic Planning Division. The Traffic Planning Director makes decisions in special cases concerning traffic arrangements of minor importance and provides municipalities with recommendations regarding the installation of traffic control devices on privately owned roads.