(1) This section applies if a person has been served with an improvement notice.
(2) A transport safety officer may, by written notice given to the person, extend the compliance period for the improvement notice.
(3) However, the transport safety officer may only extend the compliance period if the period has not ended.
(4) In this section—
"compliance period" means the period stated in the improvement notice under section 50, and includes that period as extended under this section.