Which of the following corresponds to the term "hazard to traffic"?

• 1A change in the road situation (including the appearance of a moving object that is approaching the vehicle's lane or crossing it) that threatens road safety and compels the driver to immediately reduce speed or stop.
• 2A change in the technical condition of the vehicle that threatens road safety and compels the driver to immediately reduce speed or stop.
• 3Answers 1 and 2.