What does passive pedestrian protection in cars mean?

[VonJoseph]

Passive pedestrian protection in cars refers to the use of hood pop-up technology, which causes the engine to instantly bulge during a collision, ensuring that the human body does not hit the hard car shell but instead contacts a soft and smooth surface. This can provide a certain level of protection, alert the driver in time before an accident occurs, and help avoid crashes or minimize injuries. Passive pedestrian protection includes safety systems, hazard warning systems, collision avoidance systems, etc., involving sensor technology, communication technology, information display technology, and driving state monitoring technology. Actions that activate the passive pedestrian protection system include: 1. Severe impact under the vehicle; 2. Driving over speed bumps or large potholes at high speed; 3. Objects hitting the pedestrian collision sensor.