Invero
Well-Known Member
edwardtc said:Aparently, since the monorails are computer-based, their MAPO system can do this "signalling" from within the cab, rather than have big traffic signals along the beam. I'm trying to figure out the whole "blocked frequency" system, but perhaps that was just a layman's way of describing it to Tyler. I predict there is a computer that is checking occupancy of each block of track, somehow, and reporting to each respective monorail - but I could be wrong.
Indeed, the system has been around for very very long time. As for the blocked frequency explanation, that's the laymans explanation that I was given during training. The train can look forward up to three blocks. If there is no power, no beam, or a train in that block, it doesn't see past that block, and reports back on the upper display in the green, amber, or red.