The 1994 Imola layout, which had been in place since 1981, was never again used for a Formula One race. The circuit was heavily modified following the race, including a change at Tamburello—also the scene of major accidents for Gerhard Berger (1989) and Nelson Piquet (1987)—from a high speed corner to a much slower chicane. The FIA also changed the regulations governing Formula One car design, to the extent that the 1995 regulations required all teams to create completely new designs, as their 1994 cars could not be adapted to them. The concern raised at the drivers briefing the morning of the race, by Senna and Berger, would lead to the Grand Prix Drivers' Association reforming at the following race, the 1994 Monaco Grand Prix. The GPDA, which was founded in 1961, had previously disbanded in 1982. The primary purpose of it reforming was to allow drivers to discuss safety issues with a view to improve standards following the incidents at Imola. The front two grid slots at the Monaco Grand Prix that year, which were painted with Brazilian and Austrian flags, were left clear in memory of the two drivers who had lost their lives, while both Williams and Simtek entered only one car each. Additionally, a minute of silence was observed before the race.