A quick sum-up: Yes this is the largest transit expansion in the USA, with 5 lines under construction and 2 milestones coming up this spring with the opening of the Expo Line to Santa Monica and the Gold Line to Azusa, deep in the San Gabriel Valley. The Crenshaw Line to LAX is 50% done and the Regional Connector (which connects existing lines downtown to provide one-seat rides -- no transfers required -- from Pasadena to Santa Monica, for example, or Culver City to Long Beach) is almost 20% of the way toward completion. Still to come: the build-out of Union Station, which Joel likens to "a second downtown in DTLA," rail linkages to the rest of the state with high-speed rail and, of course, the possibility of a sequel to the Measure R sales tax for transportation on the 2016 ballot. Read it on the Huffington Post.