Honestly I think more roads, and more cars are a large part of this. Cars go faster now ( legal speed limits increased in many areas several times in last several decades ) and it's literally more dangerous to play in the road now.
Yeah, and more phones. But really the pandemic also seemed to shift a lot of people into feeling that their time is wasted in cars. Which I think may be contributing to speeding and road rage which anecdotally seems far more common in my area at least.