As part of the immediate action plan “Clean Air 2017 – 2020” the Federal Government of Germany supports communities with especially high levels of air pollution with the configuration of sustainable and low-emission mobility. According to the development plan’s funding guideline, the City of Frankfurt developed the “Masterplan NOx Reduction”. PROPROJEKT together with Albert Speer und Partner (AS+P) was commissioned as external project managers for the administration and implementation of measures. PROPROJEKT is responsible for the coordination of the involved institutions, the implementation and updating of a financial management system, the controlling of the supported project proposals, as well as the documentation for the funding authority.