with adhesive plastics; these could be made reflective, famously by Scotchlite. Such signs had become almost universal by the reforms of the early 1960s. The major reform of UK road signage to better reflect European practice happened in two stages. The first was associated with the first motorway construction project and the development of a signage system for it by the Anderson Committee of 1957. Although it was additional to the existing signage, it set several benchmarks that were developed under the Worboys Committee of 1963 that was largely responsible for the road signage system effected from 1964, which is still current. Until Worboys, the most notable differences between European and UK signs was the use of symbols without text wherever possible, thereby increasing the internationalism of their meaning, and with their combined nature, such as warning signs having the symbol inside the triangle instead of on a separate information plate, on the continent. The Worboys Committee recommended that such practices were adopted in the UK and the 'New Traffic Signs' of 1964 were part of the most comprehensive reformation of the UK streetscape ever. Unlike previous government efforts to regulate signage, which tended to be cumulative, Worboys argued a modernist position of starting from a clean slate, with all previous signs being deemed obsolete, illegal even, therefore subject to total and systematic replacement. As a result, local authorities were charged with massive resignage programmes. Order and Prohibition signs were almost all replaced within a couple of years, with the warning and direction signs taking a longer amount of time. Few pre-1964 warning signs survived more than about ten years and while direction signs were similarly replaced more have survived as they were not deemed as essential. The system currently in use was mainly developed in the late 1950s and the early 1960s, with additional colour-coding introduced in the mid-1980s. There were three major steps in the development of the system. The Anderson Committee established the motorway signing system. The Worboys Committee reformed signing for existing all-purpose roads. The Guildford Rules introduced features to indicate different categories of route. Anderson Committee In 1957, a government committee was formed to design signs for the new motorway network. A system was needed that could be easily read at high speed. Colin Anderson, chairman of P&O, was appointed chairman; T. G. Usborne, of the Ministry of Transport, had charge of proceedings. Two graphic