Indeed, horizontal lines are similar to the familiar sight of a horizon line in the distance allowing them to convey a sense of wide-open space.
事实上，横线与熟悉的景物——远方的地平线相似，由此，它们适于传递一种辽阔空旷之感。
2
Sightdistance concerns along horizontal curve sections of highways and at locations where a barrier terminates near a highway's or ramp's intersection with another roadway.