You must keep left unless you’re passing other people or you’re about to turn right. Here's more about the law: The law requires you to keep left no matter what type of road you're on: • On a single-lane road keep as far left of the centreline as you can. • On a multi-lane road (such as in this video) keep in the left-most lane unless you're passing other people. You don't have to keep left if: • you're about to turn right • you're passing other people • the lane to your left is full (for exampl