points by fn-mote 16 hours ago | 0 comments
> Detecting objects (and future objects!) on a train track is still a hard problem.
In this case the “object” was another train. That’s not the “hard” part of the problem. This sounds like an apologist comment.
[–] dns_snek 16 hours ago
[–] 1718627440 15 hours ago
Yeah, that's a solved problem. Did you even read my whole comment? I answered why "just use the system from self-driving cars" wouldn't work and in fact would be less safe than the current system.
[–] AnimalMuppet 10 hours ago
What's the stopping distance of a high-speed train at full speed? I don't know, but I bet it's kilometers, not meters.
Detecting an object on the tracks 2 km away (say), as opposed to beside the track at the same distance, is in fact a hard problem. The tech used in self-driving cars is not going to solve it.
Are there systems that can warn drivers and prevent collisions without external signaling, like ACAS?