[shadowgovt]

> These cars can already recognize speed limit signs

Do you mean they're actually reading the signs as they pass on the road, or they have a map associating the current position on the road to a speed limit for that road?

If the former, the cutting edge of that technology I'm aware of isn't good enough to trust it to a safety system. And that's before we factor in added risks like "speed limit sign was obscured by a passing truck while the car drove past it so the car maintained speed."

If the latter, that's possible but it's not where Tesla is right now. Tesla doesn't own its maps, it's trusting Google, which doesn't certify the speed limits are correct enough in its map data to wire a safety system to that output.