4cast is an independent consultancy firm active in the field of traffic and transport modeling. Developing and applying traffic models, as well as analyzing and interpreting the results, form the core tasks of our work. Both static and dynamic models are utilized in this process. Through its employees, 4cast offers many years of experience in developing, estimating, applying, and managing complex model systems, including the National Traffic and Transport Model System and the New Regional Model System. Over the past 15 years, we have frequently applied our knowledge and experience at various planning scales. The results of our studies have been widely used in decision-making regarding infrastructure interventions. In addition to national and regional policy issues, we also focus on local and municipal spatial planning studies. Our client base primarily consists of national and regional governments, (public) transport organizations, and various consultancy and engineering firms.