The Regulation of Surface Freight Transportation: The Welfare Effects Revisited
重新审视地面货运监管的福利效应，指出以往研究方法的缺陷，提出正确估算程序，并利用Boyer的数据和市场份额关系给出福利效应估计，同时分析总货运需求完全无弹性假设的含义。
This paper reexamines a much-studied topic, the effects of surface freight regulation. It demonstrates that several studies use invalid methods to estimate the welfare costs of rate regulation, develops a correct procedure, and provides estimates of the welfare effects using data and modal market share relationships estimated by Boyer. The paper also analyzes some implications of the common assumption that the demand for total freight shipments by all modes is perfectly inelastic.