One of my least favorite antipatterns in my area is a crosswalk with a bunch of signs around it that flash constantly, regardless of pedestrian presence or inpu

One of my least favorite antipatterns in my area is a crosswalk with a bunch of signs around it that flash constantly, regardless of pedestrian presence or input. They flash in a slightly different pattern if you push the button. Alert fatigue, anyone? Most drivers just blow through it. As a distance runner who spends a lot of time on the roads, I'm increasingly convinced that signs, speed limits, flashing lights and other flavor of the month gizmos are totally ineffective excuses for not doing what actually needs to be done to improve pedestrian/cyclist safety, which is changing the built environment to a) reduce maximum possible vehicle speed by changing the physical structure of the road and b) providing robustly physically separated infrastructure, extending even to tunnels/overpasses, for non-vehicle traffic. I trust concrete way more than I trust laws.