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Miriam Müller
Mobility and Transport Policy, Division Energy, Transport and Climate Policy, Wuppertal Institute for Climate, Environment and Energy, Wuppertal, Germany

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Research article
Published: 01 June 2021 in International Journal of Sustainable Transportation
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Staying within the 2 °C (preferably 1.5 °C) limit requires fast and fundamental system changes, also in urban passenger transport. Shifting car traffic to environmentally friendly transport modes is one central strategy to make urban transport more sustainable and climate friendly. However, in most cities car use remains high. Therefore, this paper analyzes what course change is needed regarding direction, scale and speed of change for urban sustainability and climate protection reasons. The paper analyzes the role of modal shift as a strategy in itself and in relation to land-use (avoid) and efficiency (improve) measures. The paper draws on insights from European frontrunning cities and explorative forecasting scenarios calculated with the sophisticated integrated land-use transport model “Ruhr Region 2050”. The paper suggests that a significant reduction of urban car use is needed (direction) that roughly equals a fast halving of car use (scale), which has proven feasible under the current socio-political conditions by annual reduction rates of 0.5 to 1.5 percentage points of the trip-based modal share of car use (speed). Significantly reducing car use requires comprehensive and high-intensive measures that go far beyond usual practices. Modal shift measures need to play a crucial role in integrated approaches with land-use (avoid) and efficiency (improve) measures because they have the potential to significantly reduce car use and CO2 emissions and because they can produce comparatively fast effects – which makes modal shift measures first aid approaches to achieve a fast “bending of the curve” of excessive car use and growing CO2 emissions.

ACS Style

Miriam Müller; Oscar Reutter. Course change: Navigating urban passenger transport toward sustainability through modal shift. International Journal of Sustainable Transportation 2021, 1 -25.

AMA Style

Miriam Müller, Oscar Reutter. Course change: Navigating urban passenger transport toward sustainability through modal shift. International Journal of Sustainable Transportation. 2021; ():1-25.

Chicago/Turabian Style

Miriam Müller; Oscar Reutter. 2021. "Course change: Navigating urban passenger transport toward sustainability through modal shift." International Journal of Sustainable Transportation , no. : 1-25.

Journal article
Published: 26 June 2017 in Sustainability
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The paper presents the results of a participatory vision development process in the Federal State of North Rhine-Westphalia (NRW) in Germany. The vision development was part of a scientific research project that accompanied the development of a sustainability strategy for NRW at state level. The Sustainability Strategy NRW was adopted in July 2016 and contains parts of the vision developed in the research project: Sentences from the narrative text vision and proposed targets and indicators that back-up the vision for a sustainable NRW in 2030 were used by the state of NRW. The vision was developed in iterative steps in three consecutive dialogue rounds with different stakeholders from science and practice. The paper presents the methodological approach and the results of the vision formulation process. The paper discusses the lessons learned from the vision development—from both practical and theoretical perspectives of transition management. The paper explores the relevance of setting ambitious targets for sustainable development as part of a state strategy by taking the proposed target of a “4 × 25% modal split” by 2030 as an example. The project demonstrated that a participatory approach for vision development is time and resource consuming, but worth the effort as it improves the quality and acceptance of a vision. Furthermore, the project demonstrated that transformative science contributes valuable inputs for sustainability transitions and for facilitating participatory vision development.

ACS Style

Miriam Müller; Oscar Reutter. Vision Development towards a Sustainable North Rhine-Westphalia 2030 in a Science-Practice-Dialogue. Sustainability 2017, 9, 1111 .

AMA Style

Miriam Müller, Oscar Reutter. Vision Development towards a Sustainable North Rhine-Westphalia 2030 in a Science-Practice-Dialogue. Sustainability. 2017; 9 (7):1111.

Chicago/Turabian Style

Miriam Müller; Oscar Reutter. 2017. "Vision Development towards a Sustainable North Rhine-Westphalia 2030 in a Science-Practice-Dialogue." Sustainability 9, no. 7: 1111.