Why is so-called "black ice" on the road especially dangerous?
En español: ¿Por qué es especialmente peligroso el llamado "hielo negro" en la calzada?
A
Because it is dark and shiny
B
Because it is almost invisible and reduces grip to almost zero
Correct answer
C
Because it only appears on motorways
D
Because it increases tyre grip
Why this is the correct answer
Black ice is dangerous because it is practically invisible: the road looks wet or normal, but is covered by a thin layer of transparent ice that reduces grip to almost zero.
Topic:
Visibility and Road Hazards