That’s not basic safety, if you walk into a crane not in use that’s on you not the contractors. It’s paternalism, not safety, and the American in me groans at the idea of at midnight the cops showing up and causing a ruckus over that. A big hole you might fall into, yeah you need some cones
The problem wasn't some drunk idiot walking into a crane at night, it was that the contractors had blocked the footpath, forcing pedestrians - including the disabled, small children and people with babies in strollers - to walk into the road unprotected. I mean, would you think it was over-reavhing paternalism if the police intervened because some contractors set up a crane in a lane of the freeway without setting up cones, etc.? It's the same basic issue.
This is not about walking into the crane, it's about cones on the road to ensure that pedestrians can safely walk around the crane onto the road without walking into traffic. Basically, the crane operators, if they're going to take up the whole sidewalk, have to ensure that pedestrians have a safe way to pass around them, and that means they have to work to close a part of the road and mark that.
The cones aren't to alert the pedestrians the the crane. The cones are to mark out a path in the road for pedestrians and to alert auto drivers to that path. As an American I get that you don't typically walk anywhere but I can't believe you've never ever encountered a set of high visibility cones marking out a temporary path around construction equipment on a roadway.