contraflow
noun [ C ] mainly UK uk/ˈkɒn.trə.fləʊ/ us/ˈkɑːn.trə.floʊ/
（由于公路另一侧修缮而暂时实行的）一侧双向行驶
a temporary traffic arrangement, usually on a main road, in which traffic travelling in both directions uses one side of the road while the other side is being repaired
A contraflow is in operation/in force between junctions 13 and 14 on the motorway. 这条高速公路第13和第14个交叉口之间正实行一侧双向行驶。