BOSTON CONCERNED OVER SIGNALS
Posted on 03 July 2009 by Railways Africa Editor
According to the Washington Post, the Massachusetts Bay Transportation Authority (MBTA, which runs the trains in Boston), has been in contact with the Washington Metropolitan Area Transportation Authority (WMATA) since the 22 June collision. Boston, the paper reports, relies on the same Alstom-supplied signal system used by WMATA. During May, the paper reports, MBTA experienced what spokesman Joe Pesaturo described as an “isolated” signal system failure “when a faulty circuit board along the track in one section of Boston’s Orange Line failed to detect trains. Train operators discovered the problem and immediately stopped using the automated system while all circuit boards were checked. Trains were despatched by radio for 12 days, and MBTA personnel were posted at each station to give verbal go-ahead for trains to proceed, causing delays.
No problems were found with the other circuits, and the faulty board was replaced by the manufacturer, Adco Circuit, a subcontractor of Alstom’s, Pesaturo was quoted saying.
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