As the monsoon nears, railway authorities have sought to assure Mumbaikars that this year, there will be no disruptions in suburban services, which usually witness substantial breakdowns every rainy season. The Western Railway (WR) has added Digital Axel Counters (DACs) on standby in case the track circuiting system fails, and in turn causes signal failures, at nearly 500 flood-prone areas. DACs are trackside equipment which, when the train passes, count and store the number of axles by means of a software at both ends of the track.