Efficiency evaluation of bus transit firms with and without consideration of environmental air-pollution emissions
mode - bus, planning - environmental impact, technology - emissions
Externalities, Undesirable output, Technical efficiency, Bus transits, Environmental emissions, SBM model
This study examines the technical efficiency and environmental efficiency of bus transit firms using the slack-based measures (SBM) and non-separable slack-based measures (NSSBM) models with and without considerations of desirable and undesirable outputs. A case study based on data from 12 bus transit firms for the years 2007 to 2011 was conducted. Empirical results show that technical efficiency was affected by environmental pollution constraints from 2007 to 2011. The study has more general theoretical implications for the externalities literature as well.
Permission to publish the abstract has been given by Elsevier, copyright remains with them.
Kang, C., Khan, H., Feng, C., & Wu, C. (2017). Efficiency evaluation of bus transit firms with and without consideration of environmental air-pollution emissions. Transportation Research Part D: Transport and Environment, Vol. 50, pp. 505–519.