The Traffic Safety Act 228 - Traffic lanes
If a highway is divided into traffic lanes, the following rules apply:
- (c) no driver of a vehicle shall drive to the left of the centre of the highway where a solid line exists in the right-hand lane near the centre of the highway;
How the rule is applied
On roads with marked lanes, you must travel entirely in 1 lane. Where there are no lane lines marked, you should travel as if there were markings there. Changing lanes is permitted only when safe to do so; you need to check your mirrors and shoulder check to ensure you can make a left or right lane change in safety. If you stray between the lines when unsafe, you may be held liable for the collision.