Many years ago an arrangement was made by the Government of India that whenever the price of crude oil increased or decreased in international market, the domestic price of diesel / petrol for customers in India shall be adjusted accordingly. This was called “International Price Parity”. However the Government was not earnest and particular in adhering to this arrangement. They, some times, did not reduce the price when needed and often let go the increase when required and often combined the defined hike with the future increase. 

We all know that for the past over 30 months the sale of trucks is fairly subdued. This is also common knowledge that the reason for this was the slump in economy,  world over. More notably, it is for the same reason that truckers are not replacing their fleet or buying new vehicles.