Section 20(7)(vii) in The Bangalore Metro Railway (General) Rules, 2011
(vii)if the on-board Automatic Train Protection equipment is defective, the train may be driven in "Cutout" mode as authorised by Traffic Controller and when so authorised, the Train Operator may open and operate a sealed switch and drive the train without Automatic Train Protection and in this mode, the Train Operate shall limit the speed to twenty five Kilometrs per hour and be responsible for the safe movement of the train.