Implementation Strategies for Sustainable Vehicle Fleet Management

Research purpose. Against the backdrop of climate change, pressure is growing in the transport sector to reduce CO₂ emissions. Numerous companies are therefore setting specific targets to curb the CO₂ emissions of their own vehicle fleets. As a rule, this requires the replacement of combustion vehicles by vehicles with alternative drives. In addition to the selection of suitable technologies, economic aspects play a prominent role in this transformation process. Based on a practical case study, potential implementation strategies for achieving a specific CO₂ target are to be examined for a parcel service provider. The focus here is on a fleet of diesel combustion vehicles from the small van class with a permissible total weight of fewer than 3.5 tons, which are to be replaced by vehicles with electric drive (BEV) in order to achieve a specific CO₂-savings target. The research objective can be easily extended if one considers, on the one hand, that climate protection cannot be limited to individual countries but has to take place on a global level and, on the other hand, that sustainable strategic planning of vehicle fleets also concerns other vehicle segments, such as company cars for individual transport or trucks with higher permissible gross weights.

Design / Methodology / Approach. In the first step, framework conditions and criteria are defined that are needed for an evaluation of the implementation strategies. In the second step, a practical case study is constructed. In the third step, different scenarios and strategies for the conversion of the vehicle fleet are designed in order to achieve the set CO₂-emission targets. In the last step, the economic and ecological effects of the different strategies and scenarios are measured and analysed with the help of the calculation tool "DIPO-tool", which was developed at the Ludwigshafen University of Business and Society LUBS for research and teaching purposes. To evaluate sustainability, in addition to the established metrics for Tank-to-Wheel (TtW) and Well-to-Wheel (WtW), a holistic life cycle approach is implemented that takes into account emissions during vehicle production.

Findings. Against the backdrop of expected further technological development and numerous parameters with a considerable leverage effect on economic and ecological evaluation criteria, it seems advisable from the point of view of sustainability to use alternative drives as soon as possible. From the point of view of economic efficiency, a more differentiated picture emerges depending on the framework conditions, e.g., subsidies.

Originality / Value / Practical implications. The originality of the approach lies in the application of a practical case study and the attempt to reduce the complexity of the decision problem by using an Excel-based calculation tool. The value of the study lies in the realisation that, due to the complexity, a simple optimisation approach does not seem viable but rather the evaluation and analysis of different scenarios. The practical impact can be described in the sense that the used DIPO-tool can provide effective support for sustainable implementation strategies for vehicle fleets.