A system for controlling a consist of at least first and second rail vehicles, the first and second vehicles being configured for receiving control signals via a communication link. The system includes a first control unit electrically coupled to the first rail vehicle, the first control unit being configured to receive signals representing a level of a non-propulsion consumable resource on-board the first rail vehicle and a second control unit electrically coupled to the second rail vehicle, the second control unit being configured to receive signals representing a level of a non-propulsion consumable resource on-board the second rail vehicle. The level of the non-propulsion consumable resource on-board the first rail vehicle and the level of the non-propulsion consumable resource on-board the second rail vehicle are shared across the communication link.