Last Wednesday we learned about the Department of Transportation's plan for a major reorganization of traffic flow through Park Slope, Brooklyn. In Streetsblog's comments section, Andy Wiley-Schwartz of Project for Public Spaces asked: What problems are DOT's traffic engineers trying to solve with this particular set of solutions? Or, to put it another way: What triggered this initiative? Why now? I put the question to DOT and here is what the press office came back with:

"This idea has been considered for years and since Sixth Avenue was repaved last year and we have not yet installed permanent markings, this seems like a good time to make these changes."