It is actually much worse than that. The problem they are having is that street-running LRT trains get stuck in traffic, causing bunching and other scheduling issues. The obvious solution is to get cars completely out of the way of the trains. But despite an official “transit first” policy, the SFMTA won’t do that. So instead they will spend >$100 million on a new signal system, which will map train locations in real-time simply to tell dispatchers what they already know – that the trains are stuck in traffic.