What are the most common causes of injury-causing accidents involving trains?

While there can be many causes of train accidents, the most common reasons for injury-causing accidents include: negligence of train operators and railway staff (failure to adhere to the proper process, inattention, intoxication, speeding); reckless motor vehicle drivers, cyclists, and pedestrians who trespass or cross tracks at unsafe times; stalled vehicles on tracks; unprotected rail crossings or defective safety features at crossings (lights, bells, crossing arms); mechanical failures and/or defective tracks; derailments; and suicide.