For future assistance systems Car-to-X communication is a key technology for cooperative applications ranging from highly dynamic safety systems to information systems, informing the driver about situational aspects non-detectable for on-board sensors. To test such systems in real world experiments the testing effort as well as the associated costs are exorbitant compared to simulation trials. Thus, simulation seems a promising alternative for testing and evaluating wireless communication technologies and its corresponding applications in the automotive domain. The presented paper describes a common design process for the development and testing of applications based on Car-to-X communication technology using as an example a traffic management application. Thereby, this process starts with the investigation of the application within a macroscopic scenario view to parameterize the variables influencing …