He said speed had been a factor in the accident and thick fog meant there was low visibility.
For example, if the background luminance level is low, the visibility threshold generally has a relatively large value.
"The visibility is low," she said.
I wouldn't bet against a cast like this, but today it's wet, overcast and visibility is low.
And the terrain can make flying here pretty challenging, particularly when visibility is low".
Captain Giampaolo Trucco, a spokesman for divers from the Italian navy, said: "Going inside the boat is the toughest job, psychologically, since visibility is low and the numbers of bodies is extremely high".
We believe Royal Mail faces particular issues with having a highly unionised, relatively well paid workforce at a time when its revenue visibility is low and when both the letter and parcel markets are undergoing significant change.
And you can't get high up on high, even when visibility is low: the ski area is on National Forest Land, where federal law still bans the consumption of cannabis.
Commonsense precautions – avoiding areas where seals congregate, staying close to shore and staying out of the water around dawn and dusk, when sharks tend to be feeding and water visibility is low – are the best ways to avoid coming into a contact with a shark, experts say.
