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Estimating the Vehicle operating cost used for economic feasibility analysis of highway construction projects

机译：估算用于公路建设项目经济可行性分析的车辆运营成本

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Vehicle operating cost (VOC) is an integral part of the economic benefit estimation in the economic evaluation in feasibility studies of highway projects. It is expected that improved road conditions or reduction in congestion due to construction of a new road or upgrading of an existing road will reduce the vehicle operating cost of the affected road users. Operating cost of a vehicle type is a function of several variables including road condition, travel speed, road geometry and many other parameters. Current practice is to update VOCs in literature based on price indexes, which does not accurately represent the variation in the main factors affecting operating cost of a vehicle. Therefore, there is no reliable estimate for VOCs to be used in feasibility studies in Sri Lanka. The study evaluates VOCs of two vehicle types, namely Car and Medium truck, for varying roadway conditions to be used as representative values, for economic evaluations of highway projects in Sri Lanka, for two vehicle models. The effect of Roughness on Vehicle operating cost can be seen prominently in the obtained VOC values. It can be observed that higher speeds have a higher effect on the cost due to increasing roughness. Since HDM-4 can model continuous roughness values, combining it with a road deterioration prediction can produce accurate VOC values to be used on a cost benefit analysis of a major highway project. Further, This approach can be used to publish recommended values of VOC for various road conditions to be used in economic evaluation of feasibility studies.
机译：在公路项目可行性研究的经济评估中，车辆运营成本（VOC）是经济效益估算不可或缺的一部分。预期由于修建新道路或对现有道路进行升级而导致的道路状况的改善或拥堵的减少将减少受影响道路使用者的车辆运营成本。车辆类型的运营成本是几个变量的函数，包括道路状况，行驶速度，道路几何形状和许多其他参数。当前的实践是基于价格指数来更新文献中的VOC，这不能准确地代表影响车辆运营成本的主要因素的变化。因此，尚无可靠的VOC估计数可用于斯里兰卡的可行性研究。该研究评估了两种车辆类型的挥发性有机化合物，分别是小汽车和中型卡车，以将不同的道路条件用作代表值，用于斯里兰卡公路项目的经济评估中的两种车辆模型。在获得的VOC值中，可以明显看出粗糙度对车辆运营成本的影响。可以看出，由于粗糙度增加，较高的速度对成本有较高的影响。由于HDM-4可以对连续的粗糙度值进行建模，因此将其与道路退化预测结合可以生成准确的VOC值，以用于大型公路项目的成本效益分析。此外，该方法可用于发布各种路况的VOC推荐值，以用于可行性研究的经济评估。

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