US Patent 8710970 Signal apparatus for facilitating safe backup of vehicles

Systems and methods which allow a spotter external to a vehicle to provide signals to a driver of the vehicle in order to facilitate safe backup operations of the vehicle are disclosed. A wireless transmitter, in wireless communication with a receiver positioned within the vehicle, is operated by the spotter. An indicator, also in communication with the receiver, is configured to provide a plurality of audible and/or visible signals perceivable by the driver in response to a wireless signal received by the receiver from the transmitter. The audible and/or visible signals may comprise selected patterned tones and lights which inform the driver whether they should proceed to backup the vehicle or stop the vehicle.