Several collisions on roads around northern Ontario have kept police busy Monday afternoon.

The first happened when a transport rolled over on the Highway 17 bypass just of the Kingsway. Ontario Provincial Police say the road is blocked in all directions.

transport rollover on Hwy 17 bypass in Sudbury

The second happened on Highway 11 south of Sundridge when a camper being pulled by a truck rolled over. 

Trailer rollover on Hwy 11 south of Sundridge

OPP are investigating the single vehicle crash that took place north of Robin's Road.

No injuries have been reported. 

Police are asking drivers to slow down in that area

The third collision on Monday afternoon involves three vehicles on a different part of Hwy 11.

This one happened North of North Bay, north of Cooks Mill Road.

Police say the lane is blocked and no injuries have been reported.

The fourth crash occurred shortly before 3 p.m. in Sudbury on the Kingsway near Bancroft Drive. 

Sudbury police say it involves two vehicles headed east.

Fire and paramedics are on the scene and the extent of injuries is unknown. 

Police say drivers may experience delays in the area and ask that people slow down and make room for emergency responders.