In case you missed it, the following article by Malcolm Getz, an associate professor of economics at Vanderbilt University, was in today's Tennessean.
I am, at this point, undecided if I support the Amp or not. I do think that Nashville needs to embrace greater housing density close in to downtown and began building mass transit. In my view, we need to move away from the model of greater and greater sprawl and building wider interstates. We do not want to become Atlanta or L. A. Good, liveable, big cities you would want to visit have mass transit. I do have reservations, however, about taking two and sometimes three lanes of West End to devote to dedicated bus lanes. I think the loss of traffic capacity will result in greater congestion, more than current drivers choosing to ride the bus will result in less congestion.
by Malcolm Getz,The Tennessean, Jun. 3, 2013 - Permanently removing two lanes of traffic from Broadway and West End for The Amp/BRT will dramatically increase traffic congestion. Congestion will increase the day construction begins and will have strong adverse consequences for a long time.
How does The Amp/BRT cause congestion? (link)