The September 3, 1999, Ontario Highway 401 crash, was a multiple-vehicle collision that resulted from dense fog conditions on a section of Ontario Highway 401 between Windsor and Tilbury. There were 87 vehicles involved in the pile-up in both directions of the divided highway, killing eight people and injuring a further 45. The crash, which was the most infamous in a slew of fatal crashes on the highway between Windsor and Chatham during the 1990s, led to significant improvements to that section.
