It provides that where any scheme has been published by a State transport undertaking under section 68 C, that undertaking may apply for a temporary permit, in respect of any area or route or portion thereof specified in the said scheme, for the period intervening between the date of publication of the scheme and the date of publication of the approved or modified scheme, and where such application is made, the State Transport Authority or the Regional Transport Authority, as the case may be, shall, if it is satisfied that it is necessary to increase, in the public interest the number of vehicles operating in such area or route or portion thereof, issue the temporary permit prayed for by the State transport undertaking 796 Such temporary permit shall be effective if the scheme is published under sub section (3) of section 68D of the Act until the grant of the permit to the State transport undertaking under sub section (1) of section 68F of the Act or if the scheme is not published accordingly, until the expiration of one week from the date on which the order under sub section (2) of section 68D of the Act is made.