Traffic is getting by slowly on the 4-0-1 westbound at Trenton after a two vehicle crash involving a tractor trailer and a snow plow. OPP say the accident occured last evening and one lane remains closed this morning. Emergency personnel were called to the scene and extrication equipment was needed to remove the snow plow driver…who received only minor injuries. Callers to our newsroom say the transport rear-ended the plow…but, OPP say the investigation is ongoing.