Is there a good map to show which part of this project is at grade and which is grade separated/subway? It's not very clear to me based on the map above.
Is it the
last option here?
In my experience, full grade separation is the way to go, either through subway or elevated rail (ie BART entire system or Muni Metro Market St/Central Subways). Next most efficient would be at grade with automated level crossings with gates (ie Caltrain - although its currently working on grade separation projects). Slowest is at grade without gates or optimized signal priority (ie Muni Metro surface lines).