Thanks for your reply to that thread, "Describe your commute." Several others subsequently replied.

Noting that you ride through Cambridge (in the usual commuter direction), that's also a burden, IMO. When I ride there, usually on a weekend as part of a road ride, I'm fretful about my usual riding "style" because I've heard the police are strict on scofflaws. On low traffic-volume times, I like to make progress, and there's a lot of traffic lights on Mass Ave, especially past Harvard Square.