Changes include the addition of the entire infield area in 1988 (present day turns 3, 4, and 5, eliminating the straight that started at present day turn 2 and ended at present day turn 5) extending the track from its original 1 miles length to meet the minimum-track-length criteria of the FIM for MotoGP events, plus the more recent relocation of pedestrian bridges and embankments, and the expansion of gravel pits outside turns 1, 2, 5, 6, 8, 9, 10 for additional runoff.