Why does road paint make a noise when a car runs over it?

Sometimes it is a flexible and durable rubber composite tape that is sticky, and not paint at all.Why does road paint make a noise when a car runs over it?
Actually, its the application of the paint and not the paint that sings.


When applied with a wheel with transverse striations on it, it will leave small transverse ridges on the paint as it dries. It is these tiny ridges that create the noise one hears.

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Why does road paint make a noise when a car runs over it?
i never heard road paint but they must have laid it on pretty thick if you can hear it !!
It's a new technique being used in that the thermoplastic is put on with ';lumps'; so to speak. These do two things: warn the driver that they are getting near the edge as someone wrote earlier and to raise the road marking so that it is less affected by water. Standard road paint, when wet ,loses a lot of its reflective propoerties. This is a way to combat the loss. Hope that helps.
I don't think it's the paint, but rather the little ditches in the road next to the paint. It's to warn the driver, who may be tired or distracted that they're getting close to the side of the road or the other lanes, and that they need to pay more attention...





I think...





-Sally