(1) A large public service vehicle having sitting accommodation for more than fourteen adult passengers shall not be used as an omnibus unless there is carried thereon a licensed conductor who acts as the conductor of such vehicle or such vehicle is being used as an omnibus without such conductor under and in accordance with a permit in that behalf issued by the Commissioner under this section.
(2) The Commissioner may, if he so thinks fit on the application of the owner of a large public service vehicle having sitting accommodation for more than fourteen passengers, issue to such owner and at any time renew or revoke a permit to use such vehicle as an omnibus on a specified service or for a specified purpose without there being carried thereon such conductor as is mentioned in the foregoing sub-section of this section, and may expressly limit such permit to a specified occasion or a specified period and may attach to such permit such conditions as he thinks proper and specifies t