(a) For purposes of this Code section, "serious injury" shall include, but shall not be limited to, causing bodily harm to another by depriving him or her of a member of his or her body, by rendering a member of his or her body useless, by seriously disfiguring his or her head or body or a member thereof, or by causing organic brain damage which renders the body or any member thereof useless.

(b) Any person who causes a serious injury to another person as a result of a collision with a motorcyclist, bicyclist, pedestrian, or farmer operating any vehicle used to transport agricultural products, livestock, farm machinery, or farm supplies by committing any right of way violation under this chapter when such motorcyclist, bicyclist, pedestrian, or farmer operating any vehicle used to transport agricultural products, livestock, farm machinery, or farm supplies is abiding by the provisions of this title shall be guilty of a misdemeanor and shall be punished:

(1) For a first offense, by a fine of not less than $250.00 in addition to any other penalties stipulated by law and the court shall report such conviction to the Department of Driver Services; and

(2) For a second or subsequent offense within a five-year period of time, as measured from the dates of previous arrests for which convictions were obtained or pleas of nolo contendere were accepted to the date of the current arrest for which a conviction is obtained or a plea of nolo contendere is accepted, by a fine of not less than $500.00 nor more than $1,000.00 and imprisonment for not less than ten days nor more than 12 months. Any fine imposed under this paragraph shall be mandatory and shall not be suspended or waived or conditioned upon the completion of any course or sentence. The court imposing punishment under this subsection shall forward a record of the disposition of the case to the Department of Driver Services.