车辆使用率迅速增加，在世界新兴经济体尤然，所以，道路安全方面的能力建设至关重要。
Given this rapid expansion of vehicle use, especially in the world's emerging economies, capacity-building for road safety is crucial.
分别基于优化仓储时间和仓储量、车辆使用率以及综合成本等因素，提出求解问题的三种不同的启发式算法。
Three approximation algorithms are moreover proposed, and each of them respectively stresses the storage, vehicle utilization and the mixed cost of them.
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