Why do streets not get a coat of sealant like parking lots do?

Question

Why do I see entire parking lots get a coat of sealant, but never really see streets or highways get a large coat of sealant?

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For example: [https://youtu.be/Lmd1r0P0GWE?t=192](https://youtu.be/Lmd1r0P0GWE?t=192)

In: 709

Answer 1

We do periodically seal coat long stretches of highway in Idaho every summer. It adheres a small layer of rock chips to the roadway to increase traction during the winter and reduce oxidation of the roadway, extending the lifespan of the asphalt.