It's not visible, and you will not know it's there until you drop the grip.
The black slippery slope, which according to the Swedish Transport Administration is the most treacherous, is expected to hit several parts of the country during the weekend.
The authority is now issuing a warning to everyone who goes out on the roads:
- You need to think about what kind of road you are passing.
Is it near water?
Is it a sink?
Then you have to slow down before you arrive, says Bengt Olsson, press manager of the Swedish Transport Administration.
Black slipperiness often occurs when the temperature changes a lot.
It can strike even though it is plus degrees, country roads involve the greatest risk.
The only way to protect yourself is to adjust the speed.
- If you have not changed to winter tires already, do so now.
It is now that the temperature really seems to change in most of the country, says Olsson.