An exit ramp off the E.C. Row Expressway to Huron Church Road was closed for a couple of hours this afternoon.
Provincial police closed the ramp from the expressway westbound lanes after an unmarked OPP cruiser was struck from behind by a pickup truck around noon.
The officer had pulled over to deal with an unrelated accident.
Another vehicle had gone into a culvert.
No reports of serious injuries.
Police are investigating.