It's a really tough question. Again, unfortunately, this would be more my opinion as opposed to what's rooted in evidence, so I'm actually going to hold off on that, because I think we should be guided by research and not one individual opinion.
Evidence of meeting #135 for Transport, Infrastructure and Communities in the 42nd Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was collision.
A recording is available from Parliament.