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Silverstone Circuit is built on the site of a World War II Royal Air Force bomber station, RAF Silverstone, which opened in 1943. The airfield's three runways, in classic WWII triangle format, lie within the outline of the present track. Silverstone Circuit was first used for motorsport by an ''ad hoc'' group of friends who set up an impromptu race in September 1947. One of their members, Maurice Geoghegan, lived in nearby Silverstone village and was aware that the airfield was deserted. He and eleven other drivers raced over a two mile circuit, during the course of which Geoghegan himself ran over a sheep that had wandered onto the airfield. The sheep was killed and the car written off, and in the aftermath of this event the informal race became known as the ''Mutton Grand Prix''. The next year the Royal Automobile Club took a lease on the airfield and set out a more formal racing circuit. Their first two races were held on the runways themselves, with long straights separated by tight hairpin corners, the track demarcated by hay bales. However, for the 1949 International Trophy meeting, it was decided to switch to the perimeter track. This arrangement was used for the 1950 and 1951 Grands Prix. In 1952 the start line was moved from the Farm Straight to the straight linking Woodcote and Copse corners, and this layout remained largely unaltered for the following 38 years. For the 1975 meeting a chicane was introduced to try to tame speeds through the mighty Woodcote Corner (although MotoGP would still use the circuit without the chicane up until 1986), and Bridge Corner was subtly rerouted in 1987. The track underwent a major redesign between the 1990 and 1991 races, transforming the ultra-fast track (where in its last years, every corner was taken in no lower than 4th or 5th gear (depending on the transmission of the car) except for the Bridge chicane, which was usually taken in 2nd gear) into a more technical track. The reshaped track's first F1 race was perhaps the most memorable of recent years, with Nigel Mansell coming home first in front of his home crowd. On his victory lap back to the pits Mansell even found time to pick up stranded rival Ayrton Senna and give him a lift on his side-pod, after Senna's McLaren had run out of fuel on the final lap of the race. Following the deaths of Senna and fellow Grand Prix driver Roland Ratzenberger at Imola in 1994, many Grand Prix circuits were modified in order to reduce speed and increase driver safety. As a consequence of this the entry from Hangar Straight into Stowe Corner was modified in 1995 so as to make its entry less dangerous. In addition the Abbey kink was modified to a chicane just 19 days before the 1994 GP. ==Recent developments== Bernie Ecclestone stated that he would negotiate the future of Formula One at Silverstone post-2009 only if the BRDC gives up its role as promoter of the event. In an Autosport interview he said "I want to deal with a promoter rather than the BRDC. It is too difficult with the BRDC because you get no guarantees with them. We've said that unless they can get the circuit to the level expected from so-called third-world countries we are not prepared to do a deal. They know what we want them to build." A new pit-and-paddock complex is the minimum redevelopment required.〔 Maurice Hamilton has described the attitude of the BRDC as "(to be ) inflexible and sometimes arrogant". During testing ahead of the British Grand Prix, Damon Hill likened the relationship between the BRDC and governing body as that of Aladdin's Cave: "The genie says give me the lamp and Aladdin says get me out of the cave and I’ll give you the lamp. You’re in this constant cycle whereby in order to get our plans implemented we need to have a Grand Prix contract, and in order to get the Grand Prix contract we have to have our planning." On 1 August 2007 it was announced that a £25m redevelopment of the circuit had been approved, with new grandstands, pit facilities and a development centre planned. However, on 4 July 2008 it was announced that the event will move to Donington Park from 2010. On 12 January 2009 it was announced that Silverstone will host the British MotoGP from 2010 after signing a five-year deal to hold this event. On 18 February 2009, the first pictures of the MotoGP Layout emerged (this has since changed to the layout that was constructed). The track will be slightly longer than the Grand Prix circuit, as it uses parts of the three main configurations at Silverstone – the Grand Prix circuit from the start-finish to Abbey corner, then turns right to go up part of the International layout in reverse, before joining the National Circuit's straight from a left-hand hairpin known as the ''Arrowhead''. Having negotiated the straight, the bikes will rejoin the Grand Prix circuit at Brooklands. On 20 June 2009 Bernie Ecclestone stated that there would be a British Grand Prix at Silverstone in 2010 if Donington was not ready to host it. When asked why he had moved from his previous "Donington or nothing" standpoint he cited changes in the structure of the BRDC meaning there was a better way of negotiating with them over future commercial rights. Furthermore during an interview with the BBC about the Formula One Teams Association threatening to break away and form their own series, FIA president Max Mosley said it was "highly likely" the 2010 British Grand Prix would return to Silverstone. On 24 October 2009, BBC News reported that Donington had failed to raise the £135 million needed to stage a British Grand Prix, that Donington's bid 'looks over' and that Bernie Ecclestone had offered the race to Silverstone, but that the terms appeared to be the same as those that the Circuit rejected the first time around. On 7 December 2009, Silverstone was awarded the rights to host the British Grand Prix for the next 17 years. Part of the deal was for a new pit lane to be built. The British Grand Prix started to use the Arena circuit configuration since 2010, thus increasing the track's length by 759 metres. Ahead of the Grand Prix, a new pit complex was completed, making the straight between Club and Abbey corners the new pit straight. The British Racing Drivers' Club (BRDC) has agreed to a 999 year lease of the Silverstone business park and development land around the outside of the Formula One circuit with property developer MEPC. MEPC has paid 32 million pounds for a long-term lease. This payment has allowed the BRDC to pay off its long and short-term loans from Lloyds Banking Group and Northamptonshire County Council 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「Development history of Silverstone Circuit」の詳細全文を読む スポンサード リンク
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