The SLOCAT Strategic Development Plan 2023-2026 conveys the sharpening of our impact towards turning the greatest transport, sustainability and climate change challenges that our societies are experiencing into opportunities for systemic transformations. To continue powering the sustainable, low carbon transport revolution with ambition, solutions and collaboration for the people and the planet; this Plan outlines the vision and thematic areas of intervention of SLOCAT for the coming years. In doing so, it introduces the first ever SLOCAT Theory of Change as a compass for our work and is aligned with the Sustainable Development Goals (SDGs) and the Paris Agreement on Climate Change. Building upon the strengths and distinctiveness of SLOCAT, 2023-2026 strategic objective, targets, business model and organisational enablers are traced. With all these elements, this Plan aims at providing SLOCAT Partners, donors, supporters and secretariat with a clear and coherent multi-annual horizon.