Roads made up of bitumen with plastic waste can 'cause' cancer!

Roads made up of bitumen, using waste plastic materials, is in the news these days. I wonder when the road heats up in summers, thousands of commuters would use it. Then are there are chances of cancer?
I have never read it anywhere, but I suspect that the fumes released by the plastic are obviously not full of oxygen. They may harm us for sure.
The little peace of article is just my point of view without any expert advice.
Nasser Gorsi