A person who exited a disabled vehicle on Highway 400 was struck and killed by oncoming traffic early Friday.

The collision occurred on Highway 400 near Highway 401 at about 3 a.m., police said. The driver left the vehicle and was struck by another vehicle near the Black Creek Drive exit.

The driver was attempting to address a vehicle issue at the time of the collision, police said.

Two lanes of the southbound Highway 400 were shut down until about 7:15 a.m. for the police investigation.