Objective and verifiable information about the condition of a turnout is not automatically available for operators; often this information is only limited or restricted. The resulting potential for optimisation, is an indicator in the sense of a defined measure and is determined and improved only to a very limited extent. In this project a well-founded monitoring method which fulfils the special demands of urban infrastructure will be developed. The fundamental differences in the needs and characteristics compared to long distance rail applications will be determined and evaluated. The decisive criteria of recording and processing of all defined and needed measures in terms of condition based maintenance will be realised in the form of a prototype. The development of the module focuses on the separation of and the non-reactivity with existing signalling applications. The integration of present infrastructure for data transmission is another goal. The locally recorded condition measures will be made available to a superior management system.