CONTROLLING AN INDICATOR AT A REAR CAR OF A TRAIN BASED ON A CONTROL SIGNAL FROM A LEAD CAR

A device for attachment to a train having a lead locomotive or control car and a rear car may include an indicator disposed with the rear car. A communication interface may receive at least one control signal from an interface onboard the lead locomotive or control car, and the control signal(s) may be generated based on at least one of an environmental condition, a hazardous condition, a type of cargo associated with the train, a time and location of the train, a positive train control (PTC), an electronic train management system (ETMS), an authorized trigger, or a manual input. A controller may be coupled to the indicator and the communication interface and may change a state of the indicator based on the control signal(s). Systems and methods for controlling an indicator are also disclosed.