Effective June 2015, motorists are required to keep right and let others pass. This applies to B.C. highways with two or more lanes of traffic travelling in the same direction and a posted speed limit of 80 km/h or greater.
Driving in the left lane is not permitted unless a motorist is:
overtaking and passing another vehicle
moving left to allow traffic to merge
preparing for a left hand turn
passing a stopped official vehicle displaying red, blue or yellow flashing lights (for example, police cars, ambulances, tow trucks, maintenance or construction vehicles).