The Traffic Signs (40 mph Speed Limit) Directions 1958
The Secretary of State and the Minister of Transport and Civil Aviation (hereinafter referred to as "the Minister") acting jointly in exercise of their powers under section 48 of the Road Traffic Act, 1930, as read with the Transfer of Functions (Roads, Bridges and Ferries) Order, 1955, and of all other powers them enabling in that behalf hereby give the following Directions:—
Made 21st February, 1958. Coming into Operation 15th March, 1958.