Today THE 1 km - long Ghan passenger train was involved in another accident yesterday when it ran into a grandmother 's car trying to nip across a level crossing . Motorist Gwen Rogers , 77 , who was driving to hospital for treatment to a bad arm , said she thought the train was moving so slowly that she would have time to get over the track . " I sort of looked that way , " she said . " But when I looked the other way I heard the train 's horn blow . "

Question: What may be the reason for the accident ?
Answer: The woman was too old and had bad eyesight .The woman was not paying attention while driving .The train did not see the woman 's car .None of the above choices .