An operator control unit having a user interface that allows a user to control a remote vehicle, the operator control unit comprising: a transmission unit configured to transmit data to the remote vehicle; a receiver unit configured to receive data from the remote vehicle, the data received from the remote vehicle comprising image data captured by the remote vehicle; and a display unit configured to display a user interface comprising the image data received from the remote vehicle and icons representing a plurality of controllable elements of the remote vehicle, and configured to allow the user to input a control command to control at least one of the plurality of controllable elements. Inputting a control command to control the at least one controllable element comprises selecting the icon representing the at least one controllable element, inputting an action for the at least one controllable element, and requesting that the at least one controllable element performs the action.