The leading and trailing driving coaches shall have GPS antenna, one set of two Head Code units and a Driver Desk Console (DDC) combined with Train Control Unit (TCU) consisting of CPU and GPS receiver to facilitate change in route/destination of the train by the motorman and necessary power supply for these modules. All the coaches including leading and trailing driving coaches shall have 2 nos. of In-Coach Display units, Audio Announcement Unit (AAU), Audio Amplifier Unit along with necessary power supply unit and 4 nos. (Upgradeable to 6) of Loud Speakers. The head code unit shall have manual override facility to set the display of information in case of failure of DDC/TCU and/or the communication between DDC/TCU and Head code.