204blue City Highway had always been notorious for its tight curves and poor roadway visibility, and the accident rate there was generally very high.

Blue City高速公路过窄的弯道和很差的视野是一直以来为人所知的，那里的事故率总是非常高。

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Dense fog is covering roads in the north and visibility is very poor.

浓雾笼罩了北部的公路，能见度很低。

youdao

Widespread ice on untreated roads and "very poor visibility" during heavy snow showers would make driving conditions dangerous, the Met Office warned.

BBC: NEWS | UK | Temperatures 'will keep falling'

Underwater visibility in the Foyle is very poor at the best of times making identification difficult.

BBC: Experts to examine River Foyle, Derry, wreck

"Because of the poor visibility and high winds we ran a very real risk of going over the edge, " he said.

BBC: Pen y Fan rescue in blizzard conditions on Beacons