That applies to any asphalt road. Basically that's the binding agent (which contains oil) wearing off the surface. https://www.quora.com/Why-do-roads-turn-gre

That applies to any asphalt road. Basically that's the binding agent (which contains oil) wearing off the surface. https://www.quora.com/Why-do-roads-turn-grey-when-they-get-paved-black?share=1 https://www.quora.com/Why-do-roads-turn-grey-when-they-get-p...