Road studs delineate the edges of a carriageway or the division of traffic lanes.
行车道上镶嵌反光路钉，用以划分行车道的边缘或行车。
Crews will close all lanes of SR 530 from 7am to 5pm on Friday and Saturday, August 20 and 21, between both entrances to Oso Loop Road to install the solar studs in the centerline of the highway.
八月二十日和二十一日，也就是周五和周六的早七点到下午五点工作人员将关闭所有SR 530路段的通道，在OSO loop路的两个入口之间把太阳能道钉安装在高速公路的中心线位置。
Green studs indicate the edge of any part of the carriageway at a road junction, layby or passing place.
绿色路钉则设于毗连让车处及小路的入口车路边缘。
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