From time to time, a public transit enthusiast posts a map online showing a hypothetical expansion of the Massachusetts Bay Transportation Authority. Discussion ensues. Green Line service out to ...

U.S. Transportation Secretary Sean Duffy warned Friday that Chicago and Boston are at risk of losing federal support unless local leaders swiftly take steps to improve safety on their transit systems.

Brian Kane, chief of the MBTA’s public oversight board, has spent much of his working life pointing out the T’s problems. As with many longtime Boston-area residents, his attitude toward the agency is ...