Traac Control Systems Case Study: Problem Description and a Note on Domain-based Software Speciication

The problem of specifying a radio-based railway level crossing control system is described. It is used within the DFG-supported Priority Programme \Software Speciication" as a comparison case study for a number of participating research projects and shall ooer realistic problems from the traac control systems domain. The remainder of the paper deals with the necessity to combine the beneets of domain modelling and formal description techniques for better software speciication. Domain modelling is identiied as a key issue for putting formal speciication techniques into engineering practice. Some related approaches are discussed. The relevance of incorporating domain knowledge into software speciication is demonstrated at hand of an example from the reference case study.