Abstract: Systems, methods and computer programs may be used to represent first and second components of a commodity transport network. A first operating characteristic value may correspond to the first component. A critical value may be received. A programmed computer may be used to determine if the first operating characteristic value is at least as great as the critical value. If so, a first representation representing the first component may be displayed. A second representation that represents an operating state of the second component may be displayed. A change in the state may correspond to a change in the first operating characteristic.