This paper is a "statement" for the March special issue of JEAPM on "Impact Assessment Research: Achievements, Gaps and Future Directions".

This article discusses recent developments in integrated planning for the national road infrastructure in the Netherlands. It lays emphasis on project definition as a "missing link" between strategic planning and operational planning.Road development projects may have considerable negative...

Welcome to this special JEAPM issue on impact assessment (IA) research, which — besides this introductory paper — includes 16 short papers contributed by a wide range of leading IA researchers from around the world. These papers provide for an overview of achievements, gaps and future...

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...