Traditional asphalt bitumen is black because of the dense organic material that makes up the material. ... It is more expensive than regular asphalt bitumen because there is less of its pigmentable counterpart produced during crude oil distillation, and it requires more materials and chemical additives to make.

Why do they make asphalt black?

Bedrock in Arizona is high in copper and iron deposits, which is why the rock is a dark red. When the red rock is used as a paving material the road will not appear red at first. The top layer of asphalt cement will still give the road a black color, but over time the top layer will wear away turning the road red.

Why the roads are black in Colour?

Asphalt concrete absorbs heat but that doesn't affect to visibility in extremely hot conditions.In night times bright colors can be easily seen on black roads. whereas bright colors on white roads cannot easily be identified.