Ir. Jan Ploeger, SUM PhD working on the Connected Histories of Bicycles and Trains at the History Division in the Technology Innovation, Society Group at Eindhoven University of Technology, is also program manager at the Transport and Environment Department of the province of Zuid-Holland, responsible for developing a program for the energy transition in public transport and road infrastructure. He worked as Team Manager and traffic planning and safety consultant in the Transport and Road Research Division (AVV) of the Netherlands Ministry of Transport between 1990 and 2002, when he became an expert on cycling facilities and a leading member of the â€˜Masterplan Bicycleâ€™ project group. He headed the editing team of the classic Design Manual for a Bicycle-friendly Infrastructure (CROW 1993, revised in 2006); led 25 professionals in the field of integral mobility policy, model studies, social and economic research, and spatial planning before participating in writing the Dutch National Traffic and Transportation Plan as chief editor. Between 2000 and 2010, he participated in the Interprovincial Association (IPO) management team. He contributed to the financial decentralization of national powers and to broadening of provincial powers in regional planning and mobility. He was the first author of the Dutch cycling Unionâ€™s visionary publication Fiets en trein op Ã©Ã©n lijn in (1982) about the need of integrating cycling and train use.