Investigators say that on Friday evening, the man – who they allege was under the influence of an opiate – brought his vehicle to a stop, but it began to roll after he passed out.
They say the vehicle struck a city bus, but none of the occupants were significantly injured.
Police say that when paramedics got to the scene, the driver of the vehicle was still unconscious, but they were able to wake him.
They say he was taken to hospital for examination, and his blood was taken for an analysis.
Police have charged the 39-year-old Sarnia man with driving while impaired by drugs, careless driving, using an unauthorized plate and operating a vehicle without insurance.
Source: Global News