STEVE will run four demonstrations in four different STEVE cities. Since each city has a different focus and differs in its objectives, a common methodology framework, which covers these prerequisites will be established. The Assessment Plan will inherit concepts from established methods (e.g., the FESTA and AMITRAN methodologies) and other EC projects (e.g., SilverStream), to derive a common method tailored on the objectives and needs of STEVE. The STEVE demonstration activities will be based on a stepwise approach in order to realize its set of objectives. Two iterations are foreseen to learn from the experiments and apply the corrective actions along the course of the project. The scientific and technical objectives as well as the specific objectives of the STEVE cities affect different impact categories, namely environment, user behaviour and mobility