If you are driving along Highway 17 you are asked to not pick up any hitchhikers.
OPP have issued the warning as they continue to search for a wanted man who struck a flagman on the Trans-Canada and left the scene on foot.
The incident occurred Monday morning west of Marathon.
OPP say the driver hit a 23-year-old worker and then collided with a rock cut before taking off.
The wanted individual has been identified as 23-year-old Ibrahim Sendagire of Edmonton.
The victim is from Marathon and he's in Thunder Bay Hospital with serious injuries.