Is it possible for the road to be slippery even if the temperature is +4°C?
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“If the temperature is +4°C or lower, there is always a risk of the road being slippery.” (Driving Licence Book, 19th Edition, page 167)
If the weather has been very cold over several weeks, and the road is covered in a thick layer of ice, it will still be slippery even if the temperature rises significantly for a short period of time.
There is also a driving licence book online (2023).
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