期刊名称：DIW Diskussionspapiere / Deutsches Institut für Wirtschaftsforschung, Berlin
出版年度：2008
卷号：2008
出版社：Deutsches Institut für Wirtschaftsforschung, Berlin
摘要：In this paper, we present a nonparametric comparative efficiency analysis of 179
communal public transport bus companies in Germany (1990-2004). We apply both
deterministic data envelopment analysis (DEA) and bootstrapping to test the
robustness of our estimates and to test the hypothesis of global and individual
constant returns to scale. We find that the average technical efficiency of
German bus companies is relatively low. We observe that the industry appears to
be characterized by increasing returns to scale for smaller companies. These
results would imply increasing pressure on bus companies to restructure.
