The “Strengthening Accessibility at Night through the Evaluation of Transport Solutions” (SANSETS) project aims to explore how innovative off-peak mobility services can improve nighttime accessibility in the Stockholm Region. SANSETS focuses on designing and evaluating targeted solutions, such as extended service operations, development of on-demand services, and partnerships with currently operating ride-hailing mobility companies (e.g., targeted subsidies, first/last mile integration). The project will analyze how such solutions perform in terms of accessibility, cost-effectiveness, and distributional impacts with a particular attention to geographic variations across different suburban areas selected as case studies. From a methodological perspective, SANSETS builds on advanced agent-based, activity-based modeling (MATSim), combined with accessibility and equity metrics and economic appraisal. It will simulate current and future scenarios to inform strategic planning for off-peak mobility. The analyzed alternative solutions for selected suburban case studies will be identified in close collaboration with experts from Region Stockholm.