This paper measures the technical efficiency of 54 public road transport operators and investigates the degree to which various factors influence efficiency levels in these firms. The study makes an attempt to provide an overview of the general status of different operators in 18 countries. Stochastic Frontier Analysis (SFA) methods are applied to our sample over a twelve year period from 2000 to 2011. To our knowledge, this is the first comprehensive analysis of technical efficiency of public road transport operators in 18 countries using parametric method. Our empirical results indicate that investment, operating profit and firm size have a significant influence on technical efficiency levels. We find that technical efficiency level of public road transport operators varies between 0.458 and 0.95. We also observe that large-size operators with more investment capacity tend to be more technically efficient than small-size operators. Finally, we find that operators from developed countries are technically more efficient than those of developing countries.

This study aims to explore the synergy between corporate sustainability and corporate sustainable governance and its effect on a listed firm’s value efficiency. This research studies the interaction of these two critical dimensions of modern business, highlighting their combined effects on the value of the firm. We analyze the effects of corporate sustainability and the interactions of sustainability proxy and corporate governance practices on the value of 45 Saudi listed companies measured by Tobin’s Q during the period 2014–2022 using the True Fixed Effect model. Our results reveal that the average firm value efficiency of listed Saudi firms over a 10-year period is 87%. Our findings reveal that the interaction of corporate sustainability proxy and size of the board, number of board meetings, and board independence improve corporate value efficiency, while the interaction between corporate sustainability and ownership concentration has a negative impact on corporate value efficiency. Our research results indicate that sustainability initiatives can yield favorable effects on a firm’s value efficiency.