Quality for line control systems in the model

Route guidance systems serve as electronic displays on motorways and motorways to improve traffic flow and road safety, for example by displaying speed limits, warnings and notices. A project commissioned by the Federal Ministry of Transport and Digital Infrastructure (BMVI), represented by the Federal Highway Research Institute (BASt), is investigating how errors (e.g. sensor defects or planning errors) affect the quality of route guidance systems (e.g. lack of harmonisation). The project utilises the combined knowledge of experts and uses a mathematical quality model to determine the causes of errors. The model is based on a probabilistic process description with case-specific application options as a diagnostic tool. All important life cycle phases, such as planning, construction and operation, are analysed. Finally, specific recommendations for action are derived from this.