An advisory by Environment and Climate Change Canada is warning of heavy fog Tuesday night into Wednesday morning in parts of southwestern B.C.
The advisory, which follows two earlier advisories, warns that travelling may be hazardous, with low visibility and slippery surfaces possibly forming in areas with temperatures below zero.
Tuesday's advisory covers Metro Vancouver, Greater Victoria, eastern Vancouver Island, the Southern Gulf Islands and the Sunshine Coast.
Conditions are expected to improve near midday in the region, according to the agency.
A woman takes a picture on the side of a road during a period of dense fog in Surrey. (Ben Nelms/CBC)
"If visibility is reduced while driving, turn on your lights and maintain a safe following distance," reads the advisory.
Police say that winter conditions are settling in over southwest B.C., and have advised drivers to be aware of their surroundings after five people were killed in separate traffic accidents on the South Coast over the weekend.
Metro Vancouver's transit authority, TransLink, launched their annual 'reindeer bus' amid the thick fog on Tuesday. The bus collects toys and delivers them to families every holiday season. (Ben Nelms/CBC)
Investigators have not yet said whether the heavy fog that was in place on Sunday and Monday morning had a role to play in any of the accidents.