In 2023, San Antonio tested cool pavement at six sites; one coating cut afternoon road temperatures by about 3.6°F, while changes in air temperature remained small and inconclusive

San Antonio spent part of the summer of 2023 testing a simple idea: could changing the surface of a road make it less brutally hot? The city applied 3 different pavement treatments at selected locations and brought in researchers from the University of Texas at San Antonio to measure what happened.

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