n post at a road junction, etc with arms pointing to places along the roads, and often showing the distances to them 路标.

v [Tn usu passive 通常用于被动语态] provide (a road) with signposts; indicate (a route or place) with signposts 为（路）设置路标; 用路标指示（路径或地方）
*Is the road well signposted? 这条路的路标清楚吗?
* Our village is so small it's not even signposted. 我们的村子很小, 连路标都没有.