Yes, though I can't recall any incidents where someone set up traffic signage to intentionally cause an accident (I'm sure it's happened, but I bet it's really

Yes, though I can't recall any incidents where someone set up traffic signage to intentionally cause an accident (I'm sure it's happened, but I bet it's really uncommon). Anyway, I'm not suggesting that the car take a remote signal on blind faith, but I still think it might be useful to have some kind of indicator. It can be factored into the other sensor data - "this signaling object does appear to be in close proximity and moving like a cyclist". Just as people don't tend to mess with signage and cause crashes now, I think they're unlikely (on the whole) to do it with these kind of signals. Especially since you'd be in serious trouble if you caused a wreck.