The Road Works (Qualifications of Supervisors and Operatives) (Scotland) Regulations 1992 No. 1675 (S. 162)

9.—(1) A certificate mentioned in regulation 3 or regulation 4 shall cease to be registered on the expiry of 5 years from the date of registration.

(2) A certificate may be registered for further successive periods of five years provided that an application for registration is received by the registration body no later than three months after the expiry of the previous registration.