2 ms·
That still doesn't explain why a simple solution can't control speed limits (which would have prevented this accident).
by jonknee 11y ago
That still doesn't explain why a simple solution can't control speed limits (which would have prevented this accident).
- tyingq 11y agoThe barrier is likely the process through which PCT was mandated. Starting with this: https://www.fra.dot.gov/Elib/Document/2189 https://www.fra.dot.gov/Elib/Document/2189 "(3) POSITIVE TRAIN CONTROL SYSTEM.—The term ‘positive train control system’ means a system designed to prevent train-to-train collisions, over-speed derailments, incursions into established work zone limits, and the movement of a train through a switch left in the wrong position." The deadlines, definitions, etc, don't line up well with a "What can we do now, with existing tech, that would add value at a low cost?" approach.