60. Inference of negligence.

The nature of an accident may be such that the mere happening of it is evidence of negligence1. Examples are where a motor vehicle without apparent cause leaves the highway2 or overturns3, or in fair visibility runs into an obstacle4, or is suddenly and violently brought to a standstill5, or swerves6, or brushes the branches of an overhanging tree7. Similarly, it is prima facie evidence of negligence that a vehicle should collide with a street refuge8, or endanger pedestrians on the pavement either by mounting it