Having an Impact? Context Elements for Effective Sea Application in Transport Policy, Plan and Programme Making

This paper argues that in order for strategic environmental assessment (SEA) to be effectively applied in transport policy, plan and programme making, the existence of certain context elements is essential. However, currently, these are only partly in place. Elements revolve around formal requirements and clear provisions for SEA, the existence of transparent and consistent value frames, the consideration of traditional decision making approaches, systematic tiering, a willingness to cooperate, an acknowledgement of uncertainties and appropriate funding, time as well as support. Focusing on transport case studies from the Netherlands, Finland, Germany and the U.K., the paper provides some empirical evidence for the importance of these context elements.