Many of these deaths are preventable by improved road design and management.
这些死亡事故中，很多是可以通过完善公路设计和加强道路管理而避免的。
It proposed an improved road network moving object model.
提出了一种改进的移动对象模型。
Improved road safety conditions, as quality standards are linked to safety norms.
提高道路安全水平，因质量标准已同安全规范挂钩。
Improved road safety conditions, as quality standards are linked to safety norms.
提高道路安全水平，因质量标准已同安全规范挂钩。
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