It proposed an improved road network moving object model.

提出了一种改进的移动对象模型。

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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。

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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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U-turn on the grounds that an improved road would encourage car commuting where public transport alternatives exist.

ECONOMIST: Roads

Mr Kerr has campaigned for improved road safety since his son John, 17, died in a crash in Coventry in 1992.

BBC: Road safety cuts 'catastrophic', says campaigner

The lights, usually used on motorways stretched for more than half-a-mile and, according to Ms Watson, conditions on the road have improved as a result.

BBC: Parents appeal over teenager's death