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when its a smooth sliperry surface
Oils in the road surface mix with the rainwater - creating a slippery surface.
As rain falls, the water mixes with oil found on the road's surface, making the pavement slippery.that we use the alakalis to the litmus paper
first 30 minutes after the rain
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.
As long as you're on a good road surface that isn't slippery.
In the 30 minutes after the shower begins
This spot is prone to being slippery with out warning. BE CAREFULL!
Because there's a layer of water between your tires and the road surface, and it has much less friction than the road surface would. Additionally, oils in the asphalt can be drawn out, contributing to the slipperiness of the road.
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 you drive with an oil leak the oil drips onto the road and makes the road surface slippery for motor cycles and other vehicles.
Loose chippings are loose gravel or stone fragments which have become detached from a road surface and form a hazard to vehicles using that road