The vision of the proposed project is to develop a knowledge base that can provide better roadside design tools and strategies as current resources are conspicuously incomplete. This project addresses the current omissions in the current state-of-the-art and has the following specific objectives: 1) Improved data collection analysis for single vehicle crashes including harmonised reporting of roadside collision hazards for Europe. 2) Analysis of existing and new reconstruction activities that will identify the possible impact severity (speed and trajectory) for vehicles involved in single vehicle accidents. 3) Investigate the human factors relevant for single vehicle accidents and identify the potential for countermeasures. 4) Synthesize the technical information developed in the project with the current policies to develop best practice guidelines for the design and operation of roadside infrastructure.