在磁道钉导航的自动公路系统中，在车道中心线上埋置间距相同的磁道钉作为车辆的导航标记。
In Automated Highway System based on magnetic marker guidance, the navigation facilities refer to magnetic markers in the central road with same interval.
自动公路系统的关键技术之一是车道保持系统，它是在道路导航设施和车载传感器等基础设施上，实现车辆自动行驶在期望的车道上。
Lane keeping system is one of the key technologies of AHS in which vehicle can be run following the anticipant lane automatically based upon the navigation installation and vehicle - mounted sensors.
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