Hacker News Reader

I found it easier to understand your example by comparing to openstreetmap, which seems up to date at that location: https://www.openstreetmap.org/#map=18/54.64443/25.05401

View on HN

In this OpenStreetMap example, both crossing ways are separated by a `layer` tag. This means that https://www.openstreetmap.org/way/919604270/ has `layer-1`, essentially putting it underground, while https://www.openstreetmap.org/way/921763546/ has no such layer tag, making them clearly not connected.

Should Teslas autopilot get confused because of this that would be really bad.

I've definitely seen my Tesla think that signs / lights on an overpass were on the freeway (that I was cruising down). I think I've also _not_ seen it make that mistake in a long time, since that spot is one I regularly pass, but I haven't made a study of it so :/

Reply on news.ycombinator.com