We reviewed the work-rest rule with the industry in 2003-04 to have a new work-rest rule in place in 2005. It's far better than the one they had before, but there are still some improvements that probably need to be made with respect to crew calling. The problem is not really while they're on the train; it's what happens before—the rest, and rest after—that has probably to be addressed.
On April 1st, 2008. See this statement in context.