OPP are on scene of two separate crashes in the Essex County Wednesday morning.
The first happened on County Road 42 and according to OPP, involves a transport truck and a minivan.
County Road 42 was closed in both directions between Gracey Sideroad and Edgefield Road but has since reopened.
Highway 77 is also closed between Mersea Road 8 and Mersea Road 10 for a two-vehicle crash between a dump truck and a passenger vehicle.
Police said injuries appear to be minor in both crashes and officers are advising people that visibility is reduced due to the fog.