基本上，如果公园给使用者带来的收益大于给纳税者带来的损失，我们就说公修建公园的效益大于成本。
In principle, the park provides greaterbenefits than costs if the benefits to the users exceed the losses to thetaxpayers.
传统的路面养护决策需要将道路使用者不同的效益换算为费用进行寿命周期费用分析，这样的换算过程不仅不合理，而且还存在很大的任意性和不确定性。
Traditionally, the fond for maintenance and rehabilitation are acquired on the basis of the life-cycle cost analysis, which needs to convert the users benefit into a single monetary value.
其目的，是以对象的最低生命周期成本，可靠地实现使用者所需功能，以获取最佳的综合效益。
Its purpose is to realize dependably the function that the user need, with the lowest life cycle cost of the object, to obtain the optimal synthetic benefit.
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