Train controls

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	The Port Authority Trans-Hudson Corp. of New York and New Jersey is planning to modernize its signal system to add automatic train control capabilities. An analysis said that digitally encoded audio frequency track circuits or communications-based train control technologies would work best. Responses to an RFI are due Feb. 9.

The Port Authority Trans-Hudson Corp. of New York and New Jersey is planning to modernize its signal system to add automatic train control capabilities. An analysis said that digitally encoded audio frequency track circuits or communications-based train control technologies would work best. Responses to an RFI are due Feb. 9.

These opportunities are compiled by Input, an IT research and marketing firm in Chantilly, Va. (www.input.com)

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