contraflow
n[U, C]
transferring of traffic from its usual half of the road to the other half, so that it shares the lane with traffic coming in the other direction 逆道行驶(车辆在迎面来车一边的道路上逆行)
[attrib 作定语]
While repairs are being carried out on this part of the motorway, a contraflow system is in operation. 高速公路的这一部分正进行维修, 现实行逆道行驶. =>illus at App 1 见附录1之插图, page xiii.