I'm not familiar with this particular case, but the problem of the noise generated by train whistles is a good example. Discussions are taking place and the committee is looking into safety issues. By law in Canada, trains must blow their whistles at level crossings. Railways must comply with this operational requirement and we have no quarrel with this stipulation. However, sounding the whistle is not a rail company requirement.
On October 26th, 2006. See this statement in context.