The Traffic Signs (40 m.p.h. Speed Limit) Regulations 1961
The Secretary of State and the Minister of Transport (hereinafter referred to as "the Minister"), acting jointly in exercise of their powers under section 51 of the Road Traffic Act, 1960(a), and of all other powers them enabling in that behalf, and after consultation with representative organisations in accordance with the provisions of subsection (2) of section 260 of the said Act of 1960, hereby make the following Regulations:—