A method and apparatus to move a modular drilling rig in formation wherein the drilling rig includes a plurality of self-propelled modules to facilitate the movement of the rig while all systems are intact and fully operational. The apparatus includes a plurality of wheel assemblies which are steerable to guide the modules during movement. The apparatus also includes a propulsion system for each of the modules to drive each of the modules during movement. A steering control and position feedback system is also provided for determining the relative position of each module with respect to the master module. This control and feedback system provides feedback to the steering control and feedback systems of other modules in order to move the modules in a formation.