In the first phase of the study a cycle superhighway across the workplace area is built by the City of Tampere. Its' effects on walking and cycling are assessed after immediate and mid-term (6 months) exposure with the same measures as at baseline in September-October 2015 and second in March-April 2016. In the second phase, the workplaces are randomized to intervention and control group based on the most relevant factors related to their comparability. Each intervention workplace nominates an internal team, which develops a multilevel social ecological plan to promote active commuting to work. The research group supports the teams with material, examples and three meetings. The plan is executed in May 2016 and the effects are assessed in September-October 2016 and March-April 2017. The work-places randomized to the control group in the second phase of the study participate only in data collection but are offered one supportive meeting for promoting active commuting to work after the study.