http://www.legislation.gov.uk/ukpga/1992/30/section/3Traffic Calming Act 1992An Act to make provision about the carrying out on highways of works affecting the movement of vehicular and other traffic for the purposes of promoting safety and of preserving or improving the environment; and for connected purposes.1992-03-16texttext/xmlenStatute Law Database2011-05-271992-05-16 3This Act shall come into force at the end of the period of two months beginning with the day on which it is passed.