The highways are most slippery when ice covers the surface. They are also very slippery at the beginning of a rain, where the oils on the road are brought up from the moisture, but not yet washed away by the rain.
Just after it starts to rain.
The country that has the most highways is the Netherlands. Belgium has the second highest number of highways in the world.
A dry road is most slippery right after it starts raining. Of course any road is most slippery when it is covered in ice.
When it first starts raining, the roads are most slippery.
USA - 830 highways
New York have 29 different routs of interstate highways.
its over highways, i have the high ground
The first 15 minutes of rain are when the roads are the most slippery because there is not a layer of water completely covering the road.
The green moss was most slippery when it was wet.
when it begins to rain
A Butter fly.
it is icy and then sanded