Predictive Methodology?

It is the cosy train again! Seem like some of the assets are dwindling in peformance. Yesterday, there is only one serviceable out gate. Just imagine the queue. My friend, Wan has to sit on the staircase to wait for his turn to get out of the station at S.tinggi. 
Blame the weather or whatever, isn't there any predictive maintenance methodology at hand?

Rgds joQ

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