N-COUNT (道路维修时暂时采取的)一侧路面双向行驶 A contraflow is a situation in which vehicles travelling on a main road in one direction have to use lanes that are normally used by traffic travelling in the opposite direction, because the road is being repaired. (道路维修时暂时采取的)一侧路面双向行驶 [British]
...a contraflow between Junctions Eleven and Twelve of the M5.