(3) A Regional Transport Authority may, having regard to the matters, mentioned in sub section (1), limit the number of stage carriages generally or of any specified type for which stage carriage permits may be granted in the region or in any specified area or on any specified route within the region." "64 A. Revision The State Transport Authority may, either on its own motion or on an application made to it, call for the record of any case in which an order has been made by a Regional Transport Authority and in which no appeal lies, and if it appears to the State Transport Authority that the order made by the Regional Transport Authority is improper or illegal, the State Transport Authority may pass such order in relation to the case as it deems fit: Provided that the State Transport Authority shall not entertain any application from a person aggrieved by an order of a Regional Transport Authority, unless the application is made within thirty days from the date of the order: Provided further that the State Transport Authority shall not pass an order under this section prejudicial to any person without giving him a reasonable opportunity of being heard.