There's most definitely words which carry connotations with them. However, I cannot think of any particular connotation that comes with "collision" and thus I b

There's most definitely words which carry connotations with them. However, I cannot think of any particular connotation that comes with "collision" and thus I believe it to be entirely neutral. Can you think of any bias that comes with using "collision"? What specific part of the guidelines do you think are biased or misleading? The main thrust of the guidelines is to improve accurate reporting. Also, they aim to have consistent reporting so that the type of language used for different road users should be the same. I don't really see how asking for consistency is the same as being biased.