This rulemaking proposes to amend FRA's brake system safety standards to govern operations using the eABS system developed by AAR member railroads. This rulemaking would provide an alternative regulatory framework for railroads to utilize when choosing to use the eABS system. The rulemaking would extend the distance individual rail cars may be moved without stopping for brake and mechanical inspections and tests if the cars have a valid eABS system record. The rulemaking also proposes to allow railroads to add multiple cars to a train or remove multiple cars from a train without conducting additional brake tests as currently required if the train is solely made up of cars with eABS records.