(c) Unless an adjournment of the hearing date has been granted, upon the operator's failure to appear for a scheduled hearing, the commissioner shall suspend the privilege to operate a vessel or non-resident operating privilege until the operator petitions the commissioner of motor vehicles and a rescheduled hearing is conducted, provided, however, the commissioner shall restore such person's operating privilege or non-resident operating privilege if such rescheduled hearing is adjourned at the request of a person other than the operator. Requests for adjournments shall be made and determined in accordance with regulations promulgated by the commissioner of motor vehicles. If such a request by the operator for an adjournment is granted, the commissioner of motor vehicles shall notify the operator of the rescheduled hearing, which shall be scheduled for the next hearing date. If a second or subsequent request by the operator for an adjournment is granted, the operator's privilege to operate a vessel or, non-resident operating privilege, may be suspended pending the hearing at the time such adjournment is granted; provided, however, that the records of the department or the evidence already admitted furnishes reasonable grounds to believe such suspension is necessary to prevent continuing violations or a substantial safety hazard; and provided further, that such hearing shall be scheduled for the next hearing date. If a police officer does not appear for a hearing, the hearing officer shall have the authority to dismiss the charge. Any person may waive the right to a hearing under this subdivision, in a form and manner prescribed by the commissioner of motor vehicles, and may enter an admission of guilt, in person or by mail, to the charge of operating a vessel in violation of this section. Such admission of guilt shall have the same force and effect as a finding of guilt entered following a hearing conducted pursuant to this subdivision.