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6/28/2021
The Massachusetts Bay Transportation Authority (MBTA) has awarded Advanced Rail Management Corp. (ARM) a four-year contract, with two option years, for optical rail measurement services.
The contract includes the collection of rail profile, vertical, gauge-face and combined wear, percentage of head loss, gauge and field lip, track gauge, cross level, cant angle and gauge-face angle data. The pact requires semi-annual testing on the Green Line and annual tests on the Red, Orange and Blue Lines.
In all, ARM will collect data on 173 track miles per year. Data will be captured at six-inch intervals on the Green Line and 12-inch intervals on other lines — the tightest data-collection-interval requirements in North America, MBTA officials said in a news release.
The locations of track features such as switches, lubricators, passenger platforms, tunnels, bridges, and the beginning and end of each curve will be identified and shown on reports.