This paper explores innovative strategies for enhancing urban mobility in Groningen, Netherlands, focusing on collaborative methods. It introduces a practical 'Toolbox' approach, providing a suite of tools and methods designed to foster cooperation among various stakeholders in urban transportation planning. The research underscores the importance of community involvement and multi-disciplinary collaboration for creating sustainable, efficient, and user-friendly urban mobility solutions. By analyzing the Groningen model, the paper offers valuable insights and frameworks applicable to other urban areas seeking to improve their transportation systems sustainably.