Ontario Provincial Police will be watching this long weekend for drivers who don't "move over" for emergency vehicles.
Superior East OPP Detective Constable Trevor Tremblay says officers will be enforcing rules requiring drivers slow down and make space while passing emergency services vehicles - including tow trucks with their lights flashing - when they're on the side of the road.
Tremblay adds officers will still be watching for the "Big Four".
Tremblay also reminds that stunt driving rules recently changed, lowering the threshold to 40 kilometres an hour over the limit when that limit's 80 or lower and increasing the penalties.