Details from Motorsport Memorial: “The organizers immediately deployed a safety car to enable the marshals to clean the accident. Whilst most of the pack was cruising behind the safety car, Takashi Yokoyama, who had started the race back in seventeenth place, did not notice the field slowing down and, about to complete the first lap, came upon the other cars travelling at a speed of circa 160 mi/h (257 km/h). Takashi’s Dallara hit another vehicle and was launched five meters into the air, crashing into the gantry carrying the signboard over the main straight. The car disintegrated upon impact, scattering debris over five hundred meters and killing Yokoyama instantly. The race was cancelled.”