Yes, block based signaling is what I interpreted “local first” to mean in this context. It works, but it slows everything way down. I don’t know, but I would i

Yes, block based signaling is what I interpreted “local first” to mean in this context. It works, but it slows everything way down. I don’t know, but I would imagine, there’s still a block based setup as a failsafe backup in most or all modern rail systems.