[gozo]

Engineering from first principle tells us that roads where cars interact with unprotected humans should have a limit of 20 mph. I'm not sure if this is such a road but overall, because of physics, speed isn't really up for debate.

Edit: Also really sad to see this get removed, flagged(?), from the front page. It was a really cool hack. HN is all about BS and not technology these days it seems.

[vjvj]

Unfortunately many roads in London have 20mph speed limits now.

They do have a purpose at certain times of day but the inefficiency of doing 20mph when the road, cycle lanes and pavements are largely empty is disappointing.