How are intersections reduced? Closing them off with concrete blocks to create dead end streets? Creating more cul-de-sacs?

I certainly don't want a world where every residential street is a windy suburban-style affair that goes nowhere. That just entrenches car culture and makes it impossible to run efficient mass transit.

Effective is stopping the cars at points but not the people - Queen Anne in Seattle has many streets that become stairs at points because it’s too steep.

You can also have portions of the road that block cars but allow transit as necessary.

Cars should be discouraged and forced to go the long way around as it doesn’t harm them much, and gives an advantage to walking.

This intersection is big enough that you can just put a big concrete half-ball or a flowerbed in the middle, put up a bunch of signs that show how to use it, maybe add some plastic lane separators that ease cars into a right turn. That's it, a roundabout.

That should be a yield, not a stop sign! Preferably with a low 15-20MPH speed limit on a street that narrow.

I guarantee you it is a yield, most people will rolling stop that.

I’d just leave it unsigned entirely since it’s a three way, the incoming traffic has to slow down to make the turn anyway.