Not to mention that with the self-driving cars working as a functional panopticon, doing this and getting away with it for lengths of time is unlikely.

Even ignoring the privacy-scary scenarios of the car auto-emailing the cops to say "Dear local PD, this guy just jaywalked and halted traffic on Oak Ln, here's my [sensor gestalt] to prove it and a [photo of the offender]", it'd be pretty trivial for anyone owning a fleet of these machines who was tired of jaywalkers slowing down their commute to dump data on jaywalk-stops in the aggregate, giving cops all the numbers they need to target enforcement.

All joking aside, that's exactly how traffic works in Portland.

Also belgium and germany. Getting too close to the street/sidewalk interface will often cause cars to stop even if you have no intension whatsoever of crossing.

I'm Belgian and now living in Norway, it's even "worse" here. It's really one of the first things you notice when being here.

Being a few meters off from a crosswalk cars will stop while they would easily be able to drive on before you (Which they would do in Belgium).

How many people on foot and bike are killed and maimed in Portland every year? It's not zero.