RAMAKRISHNAN, J. :- These six writ appeals arise from the order of Srinivasan, J. in six writ petitions, which comprise of three pairs. Each pair appertains to the grant of variation in the route of stage carriage permit. According to an order of the State Government issued under S. 43-A(2) of the Motor Vehicles Act, in G. O. No. 91 Home dated 05-01-1962, the State Government extended the existing route of 48 miles in length between Udu-kottai to Manapparai, by tacking to it an extra distance of 43 miles, upto Esanattam. W, P. 229 of 1962 was for a writ of certiorari to quash this Government order, and W. P. 230 of 1962 was for a writ of mandamus to direct the Regional Transport authority not to give effect to this Government Order. These two writ petitions are the subject matter of W.A. 106 and 107 of 1962. The second pair (W. P. Nos. 159 and 160 of 1962 leading to W. A. 108 and 109 of 1962) arises out of Government order No. 28 Home dated 3-1-1962, by which a pre-existing route from Sattur to Thiruvengadam was directed to be extended upto Sankarankoil. The two reliefs like those mentioned above were sought in this pair of writ petitions. The third pair (W. P. 53 and 54 o