Elected leaders of both parties seem to agree that the roads, traffic and the MBTA in Boston and the surrounding suburbs are in much need of improvement, but there are significant differences in what they say should be done, how much money should be dedicated, and on what timetable.

Following his interview with Transportation Secretary Stephanie Pollack last week, Jim Braude was joined by Christopher Dempsey, director of Transportation For Massachusetts, and Stacy Thompson, executive director of LivableStreets.