Billing and that aspect would probably be under the CTA, the Canadian Transportation Agency; however, at Transport we're now writing some new crossing regulations and access control regulations, and in the crossing regulations the railway and the municipality will have the joint responsibility to make a safety assessment of each of the crossings and come up with whatever they need to make that crossing safer.
To answer your first question, I looked very quickly and I would say the short lines are about 12% of all derailments compared to CN and CP.