Highway 400 southbound in North York has reopened following a multi-vehicle collision late Saturday afternoon. The crash happened near Sheppard Avenue West. As a result, several lanes of the highway as well as the on-ramps from Finch Avenue were off limits as police investigated. The highway is now fully open, the OPP said in a follow-up post on X. Motorists were advised to plan alternate routes. Police said one person was transported to the hospital as a precautionary measure.