(a) As used in this Code section, the term:

(1) "Charitable organization" means any charitable unit of a religious or civic group, including those supported wholly or partially by private donations.

(2) "Human service agency" means any human service unit, clinic, senior citizens program, congregate meal center, or day-care center for the elderly, whether supported wholly or partially from public funds.

(3) "Volunteer transportation" means motor vehicle transportation provided by an individual under the direction, sponsorship, or supervision of a human service agency or a charitable organization. A volunteer may receive reimbursement for actual expenses or an allowance to defray expenses of operating the vehicle used to provide transportation services but shall not receive compensation for his or her time.

(b) Any person who provides volunteer transportation for senior citizens shall not be liable for any civil damages for any injury to such senior citizens arising out of or resulting from such transportation if such person was acting in good faith within the scope of his or her official actions and duties and unless the conduct of such person amounts to willful and wanton misconduct.