Sec. 5. (a) When an individual holds a contract to serve or is serving as a school bus driver at the time the individual obtains a public passenger chauffeur's license, the individual shall undergo the physical examination required by section 4 of this chapter at about the same time as the individual acquires the chauffeur's license. The certificate of examination and qualification shall be filed not more than seven (7) days after the examination.
(b) When an individual executes a contract to drive a school bus or begins serving as a school bus driver after obtaining a public passenger chauffeur's license, the individual may not drive a school bus unless:
(1) the individual files a certificate of a physical examination made at the time the individual last secured a public passenger chauffeur's license; or
(2) if a certificate was not made at the time of the prior examination or is unobtainable, the individual undergoes a new physical examination and files a certificate from that examination.