READ MORE:* Black ice causes multiple car crashes in Mackenzie District* Fatal crash after black ice warning for Canterbury motorists* More than 30 crashes in Southland in seven days* Black ice near Te Anau creates havoc for driversQ: Where does it happen? "It's called black ice because it tends to look like the rest of the pavement on the road... Black ice forms without creating bubbles." The deadly threat of black ice explainedNZ Police Ice is thought to have been the cause of this truck crash on State Highway 1 near Palmerston last week. A: At times when there could be black ice, drivers were advised to stay off the roads if their journey wasn't necessary. A spate of crashes are being blamed on the sinister-sounding black ice, but what is it about this kind of ice that makes it such a problem - and why is it called black?

Source: Stuff July 12, 2016 09:31 UTC