Effective date and duration of permit.
Section 24
SEC. 24. Effective date and duration of permit.—Each permit shall be effective from the date specified therein and shall continue in effect until suspended or revoked or until the Board shall certify that operation thereunder has ceased: Provided, That, if any service authorized by a permit is not inaugurated within a period of ninety days after the date of authorization as shall be fixed by the Board or after such other period as may be designated by the Board, the Board may by order direct that such permit shall thereupon cease to be effective to the extent of such service: Provided, further, That no permit shall be issued for a period of more than twenty-five (25) years.