Bitumen is recyclable, though it isn’t nearly as easy as reclaiming the aggregate. And there are techniques where you don’t need to expend lots of energy, collectively called “cold in-place recycling.”
For example, California’s cold recycling program.













Enforcement does help but it’s not as simple as asking police to enforce traffic laws, mostly because police incentives are not aligned with fair traffic enforcement. Traffic stops are well documented to be racially unfair, often used as pretext for searching trying to finding another crime, and limited in how effective they can be. This topic is covered in some popular urbanism books, like Confessions of a Recovering Engineer, and frequent reports and papers documenting these behaviors, like Traffic stop policy in Ramsey County, MN or Distracted partners: Why police traffic enforcement is inefficient.
These issues are why many vision zero policies push strongly for traffic engineering solutions over enforcement. Speed cameras, traffic circles, lane narrowing, etc work 24/7 without high operational expenditures and they’re less likely to selectively harm minorities.