( 1 ) MANDSAUR Transport Association, a Non-Trading Corporation, registered under the M. P. Non-Trading Corporation Act, 1962, has filed this petition under Article 226 of the Constitution of India against the State of Madhya Pradesh and their officers who are respondents 2, 3 and 4 and against respondent No. 5 who is contractor and who collects toll tax on Shivna Bridge, Mandsaur. According to the petitioner they own buses, trucks and other motor vehicles which have to pass through various roads and bridges during the course of business of transport and the public at large travels in the buses. Therefore, they have filed this petition in the interest of the general public, travelling in their vehicles through the Shivna Bridge at Mandsaur including those who are members of the petitioner-association. In the Mandsaur town, the Government of Madhya Pradesh has built a bridge on the river Shivna. The cost of the construction of the bridge was Rs. 26,58,955. 00. Since the date of the opening of the bridge for traffic, the State Government started realizing toll tax from the vehicles passing over the bridge. It has been further stated that since 1973, the State Government h