speed rail lines. Anthony Smith, director of the Rail Passengers Council, said it was crucial a thorough investigation was carried out. "There are two big questions which need answering quickly -- what was the car doing on the railway line and why did the train derail in such a catastrophic fashion?" he said. Rail crashes blamed on shoddy maintenance and poor driver training over the past five years have killed 42 people. --SP 0155 Local Time 2255 GMT