还包括道路设计应用，例如中央分隔带的设置、附加车道和交通信号的合理间距。
It also involves roadway design applications, such as median treatments and auxiliary lanes, and the appropriate spacing of traffic signals.
车祸发生时，他驾驶一辆4x 4车辆撞上道路的中央分隔带，车身翻转后再接近斯坦宁的地方熄火。
He was in a 4x4 vehicle which hit the central reservation and then overturned, close to the Stannington turn-off.
车祸发生时，他驾驶一辆4x 4车辆撞上道路的中央分隔带，车身翻转后再接近斯坦宁的地方熄火。
He was in a 4x4 vehicle which hit the central reservation and then overturned, close to the Stannington turn-off.
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