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A Special Engineering Test was conducted on Metropolitan Atlanta Rapid Transit Authority (MARTA) Car 502 to determine the operating temperature at various undercar locations during worst-case simulated revenue service while operating at AW2 weight (100,000 lbs). This simulated revenue service was...
Twenty-six light rail vehicles were purchased from Bombardier, of Montreal, Quebec by the Tri-County Metropolitan Transportation Authority, of Portland, Oregon for transit service in the Portland Metropolitan area.
FRA is issuing this safety advisory to emphasize the importance of timely repairing ballast defects and conditions on main tracks. FRA notes that ballast defects and ballast conditions that are not repaired in a timely manner can lead to future defects.