In arid climates, heavily-used roads end up with oily residue on them, and then the first little bit of rain basically makes the road into Spy Hunter[1] oil sli

In arid climates, heavily-used roads end up with oily residue on them, and then the first little bit of rain basically makes the road into Spy Hunter[1] oil slicks. The road actually gets less slippery after the first 30 minutes of rain, as the oils get rinsed off. [1]: https://en.wikipedia.org/wiki/Spy_Hunter https://en.wikipedia.org/wiki/Spy_Hunter