While I do believe "collision" might be a better term, I see this argument from time to time and wonder where it comes from. By its very definition, accident does NOT imply an act of god or something beyond anyone's control. It simply means the consequence was not intended, and it definitely leaves room for fault.

From the Merriam-Webster dictionary:
accident (noun)
1.an unforeseen and unplanned event or circumstance
2. an unfortunate event resulting especially from carelessness or ignorance