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Roads for Prosperity (often incorrectly called Road to Prosperity〔) was a controversial white paper published by the Conservative UK Government in 1989 detailing the 'largest road building program for the UK since the Romans' produced in response to rapid increases in car ownership and use over the previous decade. It embraced what Margaret Thatcher had described as 'the great car economy' although implementation led to widespread road protests and many of the schemes contained within it were abandoned in 1996. ==Overview== The proposals included 500 road schemes at an estimated cost of £23 billion based on predicted traffic growth of 142 percent cent by 2025. It would have involved the doubling of the trunk road capacity with around 150 bypasses being built to meet the predicted demand. According to The Times the road network expanded by between 1985 and 1995 and then by only 1.6% between 1996 and 2006; no definition of 'the road network' is provided. Schemes included the following: *Widen the M25 motorway to dual 4 lanes (some sections have subsequently been widened) *Widen the M1 motorway between the M25 and the M18 to dual 4 lanes (partially implemented much later) *Build the new Newbury Bypass (built in the face of major protests) *Extend the M3 extension past Winchester across Twyford Down (built in the face of major protests during the second half of the 1990s) *Widen the A140 road to Dual 2 lane between the A14 and Scole in Norfolk. (never built - speed limits subsequently introduced) *Widen single carriageway sections of the A12 road between the Ipswich and Great Yarmouth to dual 2 lane (abandoned) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Roads for Prosperity」の詳細全文を読む スポンサード リンク
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