the tag the location information is transmitted to the ocu 12 from the locomotive 16 from wayside equipment 18 or from a control center 20 regions of the switchyard wherein special operating constraints are established such as reduced speed limit zones may be highlighted on the display panel 24 such as by being displayed in a different color or with a flashing indicator warnings may similarly be highlighted on the display panel 24 by color flashing indications or brightness variations etc in another aspect a plurality of ocu remotely controlled locomotives 16 operating in the railyard may each be assigned a unique identifier for receiving control instructions from a respective ocu 12 the location or each locomotive 16 in the railyard may be tracked for example by the control center 20 each ocu 12 may be configured for addressing and communicating with a selected one of the locomotives having a certain unique identifier for controlling movement of the respective locomotive 16 the ocu 12 may display displaying information relating to the position of the locomotive 16 being controlled and may also display information relating to the respective positions of other locomotives 16 in the railyard not being controlled by that ocu 12 in another embodiment the display panel 24 may be used to display images observed by an imaging device such as one or more cameras 26 located on the locomotive 16 or.