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Comment on Phoenix tried a reflective coating on black asphalt; noon surface heat fell 12°Fparent

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Cost.

The cost would be a lot lower given sufficient advance planning to stop digging it up and patching it so often. Different parts of local government often don't coordinate enough with each other, so a brand new road gets put in, and then dug up and patched 1-2 months later. Asphalt is easier and thus cheaper to patch, and the result looks...well, as bad as asphalt always does, rather than the obvious patch spots/lines on concrete.

Ideally, put in concrete roads that include conduits.

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