@barefootstache I wonder how durable they are. I mean, any plastic I know will become brittle when exposed to the elements for too long. I doubt they're going to last for centuries like stone does.
@trinsec compared to stone probably true, though compared to concrete is the actual question.
Since I don't know what the situation is where they are implementing thus practice, I assuming they are being over flooded with plastic waste, thus repurposing the already given resources over importing concrete might be a good solution for them.
In countries/areas where there are dedicated recycling programs, I doubt this would make sense.
@trinsec Microplastics is a whole different issue and I doubt it would make any difference if it is created via the streets or via landfills. Ideally no plastics should have ever been created or at least any that disturb our bodily functions. Though that is a whole different topic.
@barefootstache Oh, that might work out then. Though chances of microplastics (due to wear and tear of walking/riding over it) will be bigger in that local area then. So, that's still air pollution increase. But eh, if there's no other way...