Lake Superior and Ishpeming Railroad Company in Michigan has extended its maintenance and support agreement with RailComm for its computerized Centralized Traffic Control and Track Warrant Control System.RailComm's Domain Operations Controller dark territory train control system has been in service since 2005.

The DOC software-based control system is an advanced command, control, communications and information server-based platform that supports a wide variety of integrated solutions for indication, control, access and distribution of critical operational data across the corporate enterprise.