3. Water level in train Smart Coaches are also laden with WLI or Water Level Indicator technology. It will tell if the water in the coach is suffecient or not and when it needs to be filled.
4. Cost of smart coaches For one smart coaches Railways has to pay Rs 15 lakh. First smart coach will be unveiled by the end of next week, and if the coaches pass the pilot test then soon every Indian Rail will have a smart coach.
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