A toolkit for setting and evaluating price floors
提供了一个预测、估计和解释价格下限对产出和福利分配影响的工具包，并应用于哥伦比亚公路货运部门，发现2017年实施的费率下限减少了运输量，使承运人受益但总福利下降12%。
Regulators often impose price floors to protect producers from suspected market power by intermediaries. We present a toolkit for predicting, estimating, and explaining the effect of price floors on output and the distribution of welfare. We apply this toolkit to the Colombian road freight sector, taking advantage of rate floors that intended to protect carriers from low freight rates paid by intermediaries. We find that policymakers could have predicted the effect of price floors on quantities: a reduction in quantities for the routes and products for which rate floors were binding. After their implementation in 2017, rate floors benefited carriers but reduced total welfare by 12% of market revenue.