Section 115E(4)(iii) in The Central Motor Vehicles Rules, 1989
(iii)Flex fuel vehicles with Gross Vehicle Weight less than or equal to 3.5 tonnes shall be tested on chassis dynamometers using the prevailing gasoline vehicle emission driving cycle; and ED95 fuel vehicles with Gross Vehicle Weight greater than 3.5 tonnes shall be tested on engine dynamometers using the prevailing diesel engine emission driving cycle.