Setting speed-limit standards is a complex technical subject, because of many speed factors.
影响速度的因素有很多，因此制定限速标准是一项复杂的技术工作。
The above results have important reference values to establish speed-limit standards and road limit segmentation methods of mountainous expressway in China.
上述研究成果对建立我国山区高速公路限速标准和限速路段划分的方法具有重要的参考价值。
The models for operating speed of Highway Safety Project Evaluation Guide are modified. (4) The principles of formulate speed-limit standards for freeway are proposed.
提出了高速公路限速标准的制定原则，并结合运行速度的计算结果制定出常张高速公路的建议限速标准。
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