Abstract

The supply of as well as the demand for carsharing has been increasing in recent years. Yet, these dynamics and carsharing's function as catalyzer toward a more sustainable transport behavior in German cities are still not fully understood. For this reason, we analyze supply data for 80 large cities in Germany regarding fleet numbers and supply densities. We combine this with analyses about carsharing (non-) members by drawing on the datasets Mobility in Germany and the German Mobility Panel. We find that carsharing members use walking, cycling, or public transport 1.4–1.5 times more often and motorized individual transport, respectively, less often than nonmembers. Based on this, we build user groups regarding the people's usage of the environmental alliance (i.e., walk, bicycle, public transport). In the subsequent multinomial logistic regression analysis for the years 2013, 2015, and 2017, we find that both increasing carsharing supply and being carsharing member are not effective measures to increase the share of walking, cycling, and public transport. The availability of mobility tools, especially the number of cars in households, are more important predictors.

摘要

近年来，汽车共享的供应和需求一直在增加。然而，这些动态和汽车共享作为促进德国城市更可持续交通行为的催化剂的作用仍未完全了解。出于这个原因，我们分析了德国 80 个大城市关于车队数量和供应密度的供应数据。我们通过利用数据集 Mobility in Germany 和 German Mobility Panel 将其与汽车共享（非）成员的分析结合起来。我们发现，汽车共享会员使用步行、骑自行车或公共交通工具的频率分别是非会员的 1.4-1.5 倍，而机动个人交通工具的使用频率则低于非会员。在此基础上，我们建立了关于人们对环境联盟的使用（即步行、自行车、公共交通）的用户群。在随后对 2013 年、2015 年和 2017 年的多项逻辑回归分析中，我们发现增加共享汽车供应和成为共享汽车会员都不是提高步行、自行车和公共交通份额的有效措施。移动工具的可用性，尤其是家庭中汽车的数量，是更重要的预测因素。