Deliverable D2.3 presents the technologies developed for Demonstrator 1, focusing on passive safety improvements. It builds upon the Use-Cases refined in D2.1, providing context, limitations, and assessment methods. Key developments include: Evaluation of design iterations for vehicle architecture and restraint systems, tested against relevant load-cases to assess effectiveness and key performance criteria. Overview of the Urban Modular Vehicle Peoplemover (UMV PM) developed by DLR, with crash simulation results and occupant safety analysis. Enhancement of DLR’s CS-OPT tool, using a validated surrogate model to optimize vehicle structure for improved crashworthiness. Investigation of seatbelt designs through sled tests using the ViVA+ 50F Human Body Model (HBM), focusing on inclusive safety for physically disabled occupants. Creation and release of disabled variants of ViVA+ 50F HBM and THOR AV 50M and 05F ATDs by Humanetics for broader occupant representation in safety system design. Demonstration of an adaptive restraint system integrating advanced belt systems and adaptive airbags from THI, tested within UMV PM. Identification of further improvement areas for restraint systems, including adaptations for varying occupant sizes and orientations. The deliverable also includes the ViVA+ 50F disabled FE model as an open-source contribution to support future research.