Section 20A1/2. In the cities of Boston and Cambridge and in any city or town which accepts the provisions of this section, each manager in a city having a Plan D or E form of charter or the mayor, with the approval of the city council or board of aldermen in any other city, or the town council or board of selectmen of a town shall designate or appoint a parking clerk. The parking clerk shall report to the council or aldermen of a city, the council or board of selectmen of a town and shall supervise and coordinate the processing of parking notices in such city or town. The parking clerk shall have the authority, after such authorization by the mayor and city council in a city or town council or selectmen in a town, to hire and designate such personnel as may be necessary or contract by competitive bid for such services, subject to appropriation, to implement the provisions of this section; provided, however, that such positions shall be filled in the city of Boston and Cambridge by granting preference to persons who had been employees of said cities in the fire, police or traffic crossing guard service, and all such positions in said city of Boston and Cambridge shall be subject to chapter thirty-one, and in no case in the city of Boston and Cambridge shall the amount expended for administration of this section exceed eleven per cent of the total amount of the annual receipts collected by the parking clerk.

It shall be the duty of every police officer who takes cognizance of a violation of any provision of any rule, regulation, order, ordinance or by-law regulating the parking of motor vehicles established for their respective city or town, forthwith to give the offender a notice, which shall be in tag form as provided in this section, to appear before the parking clerk of the city or town wherein the violation occurred at any time during regular office hours, not later than twenty-one days after the date of such violation. All tags shall be prepared in triplicate and shall be prenumbered.

Said tag shall be affixed securely to the motor vehicle and shall contain, but shall not be limited to, the following information: the make, color and registration number of the vehicle involved and the state of issuance of said registration number, the date, time and place of the violation, the specific violation charged and, if a meter violation, the number of said meter, the name and badge number of the officer and his division, a schedule of established fines, instructions for the return of the tag and a notice which reads: This notice may be returned by mail, personally or by an authorized person. A hearing may be obtained upon the written request of the registered owner. Failure to obey this notice within twenty-one days after the date of violation may result in the non-renewal of the license to drive and the registration of the registered owner.

At or before the completion of each tour of duty, the officer shall give to his commanding officer those copies of each notice of such violation taken cognizance of during such tour. Said commanding officer shall retain and safely preserve one of such copies and shall at a time no later than the beginning of the next business day of the city or town after receipt of such notice deliver another of such copies to the parking clerk before whom the offender has been notified to appear. The parking clerk shall maintain a docket of all such notices to appear.

Any person notified to appear before the parking clerk, as provided herein, may appear before such parking clerk, or his designee, and confess the offense charged, either personally or through an agent duly authorized in writing or by mailing to such parking clerk the notice accompanied by the fine provided therein, such payment to be made only by postal note, money order or check made out to the parking clerk. Payment of the fine established shall operate as a final disposition of the case. Notice affixed to a motor vehicle as provided in this section, shall be deemed a sufficient notice, and a certificate of the officer affixing such notice that it has been affixed thereto, in accordance with this section, shall be deemed prima facie evidence thereof and shall be admissible in any judicial or administrative proceeding as to the facts contained therein.

The traffic and parking commission of the city of Boston, the traffic commission or traffic director of any other city or town having such a commission or director with authority to promulgate traffic rules, the city council of any other city, and the board of selectmen of any other town, shall, from time to time, establish by rule or regulation a schedule of fines for violations subject to this section committed within such city or town; provided, however, that all such fines shall be uniform for the same offense committed in the same zone or district, if any; and provided, further, that the fine for the violation of the parking of motor vehicles within ten feet of a fire hydrant shall not be more than one hundred dollars, and provided, further, that the fine for the violation of parking a motor vehicle within a posted bus stop shall be $100; and provided further, that any fine established under the provisions of this section for all other parking violations shall not exceed $50, if paid within 21 days, nor shall it exceed $55, if paid thereafter, but before the parking clerk reports to the registrar, as provided below and shall not exceed $75 if paid thereafter.

Should any person notified to appear hereunder fail to appear and, if a fine is provided hereunder, to pay the same, or having appeared desire not to avail himself of the benefits of the procedure established by this section, the parking clerk shall forthwith schedule the matter before a person hereafter referred to as a hearing officer, said hearing officer to be the parking clerk of the city or town wherein the violation occurred or such other person or persons as the parking clerk may designate. Written notice of the date, time and place of said hearing shall be sent by first-class mail to the registered owner. Said hearing shall be informal, the rules of evidence shall not apply and the decision of the hearing officer shall be final subject to judicial review as provided by section fourteen of chapter thirty A.

If any person fails to appear in accordance with said notice, the parking clerk shall notify the registrar of motor vehicles who shall place the matter on record and, upon receipt of two or more such notices, shall not renew the license to operate a motor vehicle of the registered owner of the vehicle or the registration of said vehicle until after notice from the parking clerk that all such matters have been disposed of in accordance with law. Upon such notification to the registrar, an additional twenty dollar charge, payable to the registrar of motor vehicles, shall be assessed against the registered owner of said vehicle. It shall be the duty of the parking clerk to notify the registrar forthwith that such case has been so disposed of in accordance with law, provided however, that a certified receipt of full and final payment from the parking clerk of the city or town in which the violation occurred shall also serve as legal notice to the registrar that said violation has been disposed of. The notice to appear provided herein shall be printed in such form as the registrar of motor vehicles may approve. The parking clerk shall distribute such notices to the commanding officer of the police department of the city or town upon request, and shall take a receipt therefor. The registrar shall approve such other forms as he deems appropriate to implement this section, and said forms shall be printed and used by the cities and towns.

If any person shall have failed to appear in accordance with five or more said notices, notwithstanding any notification to the registrar, the parking clerk may notify the chief of police or director of traffic and parking of said city or town that the vehicle involved in said multiple violations shall be removed and stored, or otherwise immobilized by a mechanical device, at the expense of the registered owner of said vehicle until such time as the matter has been disposed of in accordance with law.

As used in this section, the words ''motor vehicle'' shall, so far as apt, include trailer, semi-trailer and semi-trailer unit.

The provisions of this section shall apply to violations of rules and regulations relative to the use of parking areas subject to the control of the county commissioners adjacent to or abutting county buildings, and county commissioners are hereby authorized to make such rules and regulations. Said provisions shall also apply to violations of rules and regulations relative to the parking of motor vehicles established by any commission or body empowered to make such rules and regulations.

Any person notified to appear before the parking clerk, as provided herein, without waiving his right to a hearing before the parking clerk or hearing officer as provided by this section, and also without waiving judicial review as provided by section fourteen of chapter thirty A, may challenge the validity of the parking violation notice and receive a review and disposition of the violation from the parking clerk or a hearing officer by mail. The alleged parking violator may, upon receipt of the notice to appear, send a signed statement explaining his objections to the violation notice as well as signed statements from witnesses, police officers, government officials and any other relevant parties. Photographs, diagrams, maps and other documents may also be sent with the statements. Any such statements or materials sent to the parking clerk for review shall have attached the persons' name and address as well as the ticket number and the date of the violation. The parking clerk or hearing officer shall, within twenty-one days of receipt of said material, review the material and dismiss or uphold the violation and notify, by mail, the alleged violator of the disposition of the hearing. If the outcome of the hearing is against the alleged violator, the parking clerk or hearing officer shall explain the reasons for the outcome on the notice. Such review and disposition handled by mail shall be informal, the rules of evidence shall not apply, and the decision of the parking clerk shall be final subject to any hearing provisions provided by this section or to judicial review as provided by section fourteen of chapter thirty A. Each parking violation issued shall carry a statement explaining the procedure to adjudicate the violation by mail.