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Scratching the surface

机译：划伤表面

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摘要

The nation's low-volume road network can be compared to the Energizer Bunny ... it just goes on and on, providing a valuable link between rural communities and markets, schools, doctors, recreational areas and other important facilities. For the most part, low-volume roads are managed by cities, counties and townships, although some state highway agencies also have responsibility for the management of this extensive road network. A good measure of the significance of low-volume roads is that of the U.S.'s estimated 3.95 million miles of road, 1.45 million are unpaved and over 3 million are considered rural rather than urban mileage. Because of their lower traffic volumes and generally more rural nature, these roads typically receive less attention. When it comes to maintenance, rehabilitation and reconstruction of these facilities, the needs far outweigh the available funding, resulting in a growing number of deferred needs each year. Therefore, road agencies responsible for the management of low-volume roads are constantly searching for design and maintenance strategies that provide cost-effective solutions for maintaining their low-volume road network.
机译：该国的低流量道路网络可以与劲量兔子进行比较……它一直在不断发展，为农村社区与市场，学校，医生，娱乐场所和其他重要设施之间提供了宝贵的联系。在大多数情况下，低流量道路由城市，县和乡镇管理，尽管一些州高速公路机构也负责管理这一广泛的道路网络。衡量低容量道路重要性的一个很好的方法是，美国估计有395万英里的道路，有145万英里未铺平道路，超过300万被认为是农村里程而不是城市里程。由于这些道路的交通流量较低，而且通常具有更多的农村性质，因此这些道路通常受到的关注较少。在这些设施的维护，修复和重建方面，需求远远超过了可用资金，导致每年递延的需求越来越多。因此，负责低容量道路管理的公路部门正在不断寻找设计和维护策略，以提供经济高效的解决方案来维护其低容量道路网络。

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