Reason - two-wheelers were not allowed on expressways and highways were simple, two-Wheelers are light due to which they can be dangerously affected by the wind patterns caused by large vehicles for example cars, buses, trucks which weigh Tons. This is not the case with all two-Wheelers, above 350cc displacement all motorcycles have a totally different story, weighing enough and having enough power to maintain a speed in which in any case they definitely won't be riding behind such large vehicles anyways. Their power-to-weight ratio is enough to acquire the speed limit of 120Km/h effortlessly. India has a vast biking community. They wear not only helmets but padded jackets and pants which protect the rider from all major and minor impacts head-to-toe. In India motorcycle displacement can go up to 2500cc displacement and can even weigh till 260kg as well. Instead of banning all motorcycles from Highways and Expressways
two-wheelers above 350cc can be allowed on Highways/expressways. 

Here is a request that all laws that are passed can also have specific relevant adjustments instead of 1 law for all.