Hubli (UBL) WDP 4B # 20031 climbing a gradient enroute Arsikere with 16202 Talguppa - KSR Bengaluru Intercity Express. Originally a WDP 4, the loco was then recently upgraded to WDP 4B by tweaking the prime mover & change of TM configuration from Bo1-1Bo to Co-Co, as per the home shed.