The new road runs out shortly afterwards, but a few miles later the main highway turns into a recently completed dual carriageway.
朝前不远新路就结束了，但在几英里以外，干道公路转入一条新近建成的双车道。
2
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。
3
Some 80% of Costa Rica's exports and imports, and a chunk of Nicaragua's, pass along a single-carriagewayroad and a modest wharf at the run-down Caribbean port of limon.