Principle: An accident physically unavoidable is a good defence under the law of torts.
Facts: Unexpectedly, a biker crossed in front of a bus on a road that was muddy because of the recent downpour. The bus skidded on the road as the driver applied the brakes to stop it from hitting the bicycle. As a result, the front of the plaintiff’s bus, which was approaching from the other way, was struck by the rear of the bus. It was discovered that both buses were being driven at moderate speeds. The accident nonetheless happened despite the driver’s best efforts.
Choose the correct derivation.