Be it enacted by the Senate and House of Representatives in General Court assembled, and by the authority of the same, as follows:

The first paragraph of section 14 of chapter 90 of the General Laws, as appearing in the 2000 Official Edition, is hereby amended by striking out the fifth and sixth sentences and inserting in place thereof the following 4 sentences:- Any person who violates the preceding sentence shall be punished by a fine of not less than $250; and for a second offense by a fine of not less than $500 nor more than $1,000; and for a third or subsequent offense by a fine of not less than $1,000 nor more than $2,000. A second conviction or third or subsequent conviction as set forth in the preceding sentence shall be reported forthwith by the court or magistrate to the registrar who shall revoke immediately the license or right to operate of the person so convicted and no appeal, motion for a new trial or exceptions, shall operate to stay the revocation of the license or right to operate; provided, however, that no license or right to operate shall be issued by the registrar to any person convicted of a second such offense until 6 months after the date of revocation following said conviction or to any person convicted of a third or subsequent such offense until 1 year after the date of revocation following said conviction; and provided, further, that if the prosecution against such person has terminated in his favor the registrar shall forthwith reinstate his license or right to operate. No person shall operate a motor vehicle within a distance of 100 feet behind a school bus. Every school bus shall have the words "keep back 100 feet" prominently displayed on the back of the bus, in type large and dark enough so that the words are legible at a distance of 100 feet.