柯林斯詞典contraflow /?k?ntr??fl??/ 1. N two-way traffic on one carriageway of a motorway, esp to allow maintenance work to be carried out or an accident to be cleared 雙曏行駛; 公路上來廻車輛暫時共用同一側路麪行駛,尤指爲使維脩工程能順利進行或因車禍而導致的情形[英國英語] 返回 contra-flow