Under B.C.’s Slow Down, Move Over rule, when approaching a vehicle with flashing red, blue or yellow lights that is stopped by the side of the road, you must slow down to 70 km/h when in an 80 km/h or over zone, or to 40 km/h when in an under 80 km/h zone. (Such vehicles include emergency vehicles, roadway maintenance vehicles, utility vehicles and tow trucks.) On a multi-lane road, you must also change lanes if necessary to leave at least one lane vacant between your vehicle and the emergency vehicle. [“Slow Down, Move Over,” Government of British Columbia, https://www2.gov.bc.ca/gov/content/transportation/driving-and-cycling/road-safety-rules-and-consequences/slow-down-move-over]