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![]() Date: 2009-05-14 15:02:09Railway signalling Train protection systems Safety Advanced Civil Speed Enforcement System Positive train control Advanced Train Control System American Railway Engineering and Maintenance-of-Way Association Cab signalling Union Switch & Signal Transport Land transport Rail transport | Source URL: www.billpetit.comDownload Document from Source WebsiteFile Size: 1,27 MBShare Document on Facebook |