A 25 mile traffic jam clogged the northbound carriageway of the M6.

长达25英里的交通拥堵阻塞了M6号高速公路的北行车道。

Traffic was already very congested by six thirty this morning, particularly on the M1 northbound.

今早6点30分时道路已经拥塞严重，尤其是M1号高速公路北行方向。