A multi-vehicle collision snarled traffic Saturday morning on Highway 400 northbound, north of Newmarket.
OPP said the problems have cleared, but it has been receiving reports of vehicles going in the wrong direction on Highway 400 between Highway 401 and Highway 88.
“Please wait for traffic to begin flowing and drive responsibly,” OPP tweeted.
Problems on #Hwy400/89 nb resulted in significant congestion. Problems have been cleared, but the OPP is receiving multiple calls of vehicles going the wrong way between Hwy401-Hwy88. Please wait for traffic to begin flowing and drive responsibly. pic.twitter.com/qkXxKYJ20e— OPP Highway Safety Division (@OPP_HSD) March 18, 2023