81.Section 26 amends section 126 of the 1991 Act to require undertakers executing road works to: notify road works authorities of the names of the qualified supervisor and operatives (and of any previous supervisors and operatives) working on site; and provide evidence of their qualifications. The road works authority can issue a notice requiring the provision of this evidence at any time while the works are in progress, or within such period after their completion as prescribed by regulation, and the undertaker must comply with this notice.