271Amendment or cancellation of work and rest hours

271 Amendment or cancellation of work and rest hours and rest hours exemption (notice)— (a) since the exemption was granted, there has been a change in the subject to conditions or different conditions; (b) the use of fatigue-regulated heavy vehicles under the exemption has caused, or is likely to cause, a significant risk to public safety. and rest hours exemption (notice), the Regulator may amend or cancel the exemption by complying with subsections (3) to (5). (a) stating that the Regulator believes a ground mentioned in subsection (1)(a) or (b) for amending or cancelling the exemption exists; and