... Speed Control 速度的控制 Speed limit control 速限控制 speed setting control system 速度设定控制系统 ...
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Therefore, an effective combination of ramp metering and variable speed limit control is important to achieve a good performance.
由此，匝道调节率与可变速度限制间高效的联合控制对于提高道路性能显得尤为重要。
When the traffic demand is too high that ramp metering is not effective anymore, the variable speed limit control is needed to relieve the congestion.
但是当高速公路严重拥挤时，匝道控制不再有效，需结合主线可变限速控制，以缓解交通拥挤。
The officer, almost unable to control his chuckle, explained to her that "22" was the route number, not the speed limit.
警官几乎控制不住自己的笑声，向她解释道，“22”是路线编号，不是限速。
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