Notwithstanding any other provisions of the franchise to the contrary, the grantee shall at all times comply with all laws and regulations of the State and Federal government or any administrative agencies thereof. Provided, however, if any such State or Federal law or regulation requires the grantee to perform any service, or permits the grantee to perform any service, or prohibits the grantee from performing any service, in conflict with the terms of the franchise or any law or regulation of the City, then as soon as possible following knowledge thereof, the grantee shall notify the City of the point of conflict believed to exist between such regulation or law and the laws or regulations of the City or the franchise.