Under CopyrightTandler, J.J.TandlerWillersinn, D.D.WillersinnGrinberg, M.M.Grinberg2022-03-107.5.20082007https://publica.fraunhofer.de/handle/publica/35459810.1109/IVS.2007.429023510.24406/publica-r-3545982-s2.0-47849095376The EU funded Integrated Project APROSYS aims to increase the safety of road users. Among others, Subproject 6 (SP6) "Intelligent Safety Systems" develops, realises and verifies novel side pre-crash systems. Previously we presented an application analysis, the resulting system definition and the selection of sensors of a suitable side sensing system. The sensing system is based on a stereo video rig and a short-range radar subsystem. Now, a prototype system has been built up and first data were taken. These were analysed, a data fusion module was implemented and the data analysis algorithms were optimised with respect to the specific requirements of the side pre-crash application.en004conference paper