D left his tractor truck in the middle of a road on a stormy night without its lights on.
P was a passenger in a car that collided with it.
From the testimony, the court concluded that the driver of the car was guilty of negligence and was solely responsible for the collision.
Procedural History:
Trial court dismissed P's complaint.
NY Supreme Court reversed, reinstated P's claim.
Issues:
Who is liable when separate acts of negligence combine to produce a single injury when each person's act alone might not have caused it?
Holding/Rule:
When separate acts of negligence combine to produce directly a single injury, each tortfeasor is responsible for the entire result, even though his act alone might not have caused it.
Reasoning:
Assuming that the drive was negligent, the accident would not have happened, but for the negligence of the truck driver.