A story in the Globe today examines the safety and fiscal challenges facing the Green Line, which is the Boston’s only rapid-transit line without at least some form of computerized or mechanical accident-prevention system.

The article notes that the MBTA estimates it would cost up to $721 million and “require nearly a decade to design, install, and test a collision avoidance-system… That is a staggering sum for an agency with at least $3 billion in unmet repair and replacement needs.”

Even if the T had the money, the article notes, a collision prevention system could mean slower and less frequent service. Since the MBTA can’t do it all,  what would be your top priority? Vote in our poll and explain why…
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