To encourage interaction and collaboration between road-traffic researchers, we are hosting an engaging two-day workshop entitled "Road Traffic Flow: Analysis,  Optimization, and Control" at the workshop institute Eurandom at Eindhoven University of Technology on October 21st and 22nd. The main goal of this workshop is to stimulate the cross-disciplinary collaboration between scientific areas that focus on similar problems, like civil engineering and operations research, which can lead to a synergy that is beneficial for all road traffic research.