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首页> 外文期刊>International journal of sustainable transportation >Highway-user fees for overweight trucks: Consequences of deviations from the fourth-power law
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Highway-user fees for overweight trucks: Consequences of deviations from the fourth-power law

机译：超重卡车的公路使用费：偏离第四次幂法的后果

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摘要

In updating road-user fees, highway agencies are motivated by the twin objectives of equity and efficiency. The concepts of marginal pavement consumption cost (MPCC) and the fourth-power law have been used in past research in a bid to establish efficient and equitable user fees. Over the past few decades, the use of the fourth-power law has faced some criticism that the actual power of the relationship between loading and pavement deterioration deviates significantly from 4.0. In addressing this issue, this article presents a methodology that investigates the consequences of the power variations to the estimated MPCC and the distributional (equity) impacts of road-user fees for overweight (OW) trucks. The methodology incorporates practical schedules of highway maintenance, rehabilitation, and reconstruction. The analysis suggests that there are extremely small differences between the MPCC values that result from using different values of the exponent in the power law. However, different values of the exponent in the power law result in significantly different equity impacts. This article demonstrates that the equity impacts are moderate in the case of OW trucks whose individual axles are loaded close to standard axle weights. For OW trucks that are loaded within 10% of the maximum permissible weight, this article estimates that variation of the power value from 3.0 to 5.0 results in a 1%-10% surplus or deficit of their road-user charges.
机译：在更新道路使用费时，高速公路代理商受到公平和效率双重目标的激励。过去的研究中一直使用边际路面消耗成本（MPCC）和四次幂定律的概念，以期建立有效和公平的用户费用。在过去的几十年中，四次幂定律的使用受到了一些批评，即装卸和路面劣化之间关系的实际幂显着偏离4.0。在解决此问题时，本文提供了一种方法，用于研究功率变化对估计的MPCC的影响以及超重（OW）卡车的道路使用费的分配（公平）影响。该方法结合了公路维护，修复和重建的实际时间表。分析表明，幂函数中使用不同的指数值会导致MPCC值之间存在很小的差异。但是，幂律中指数的不同值会导致明显的公平影响。本文证明，对于OW卡车，其单个车桥的负荷接近标准车桥的重量，其公平性影响适中。对于在最大许可重量的10％以内装载的OW卡车，本文估计功率值从3.0到5.0的变化会导致道路使用者收费的过剩或不足1％-10％。

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