MUMBAI, Sept. 19 -- The state transport department on Thursday fixed fares for app-based cabs at Rs.23/km, up from Rs.8-12/km, bringing them on par with the rate for Cool Cabs. As per the new rules, aggregators will be allowed to raise fares by up to 1.5 times during peak demand instead of Rs.40-45 per km as before. During off-peak hours, they can offer discounts up to 25% but cannot slash rates to Rs.6-8 per km. The revised rates are to be implemented from September 18. On Thursday, hundreds of drivers staged a protest at Azad Maidan demanding enforcement of the aggregator policy as well as a ban on e-bike taxis. P4...