A good friend of mine and I have a standing argument about proper behavior when, driving, one encounters a "lane closed ahead" sign. He insists that the right thing to do is to abandon the to-be-closed lane as soon as feasible [tangent: he also gets mad at drivers who want to merge later, describing them as "cutters"], while I maintain that the best way to minimize the effect of a lane closure is to use whatever lanes are legal/open for as long as possible -- because leaving an open lane of travel unused only exacerbates the problem.
Who's right?
Disclaimer: I grew up driving in the Boston area (yes, among other "Massholes"), and my philosophy is "try never to use your brakes on the highway, and try even harder never to require anyone else to brake unnecessarily".