Thanks all! Here's a follow-up scenario with one assumption as indicated: D1 and D2 are involved in a contested accident around 1600hrs on a federal roadway. D1 calls it into local police (we're assuming that if he'd called 911, RCMP would have responded), perhaps indicating that he's on a local sid...

Thanks for clarifying the enforcement issue. What about responsibility to respond for accident investigations on federal roadways?

Reviving old thread for further discussion. While the 416 is probably a provincial highway, there are several parkways in/near Ottawa that are truly federal roadways. For an unofficial list, see the ones marked with red maple leafs here: http://en.wikipedia.org/wiki/List_of_roads_in_Ottawa According...