If we had found that as an issue, if in an investigation we were able to link the fact that there was no train whistle to an accident, that's something we would comment on. We have a couple of ongoing investigations at the moment involving both vehicles at crossings and pedestrians.
Evidence of meeting #9 for Transport, Infrastructure and Communities in the 39th Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was investigation.