Core Scenario: An assistive tool for adults and children getting in and out of the vehicle, operating when the vehicle is stationary.

Safety Design Focus:

1. Strong Linkage with Vehicle Status: Must be linked to door opening/closing and vehicle speed (CAN bus). Extension is strictly prohibited while the vehicle is in motion.

2. High Instantaneous Load-Bearing Capacity and Impact Resistance: Must withstand the instantaneous impact force (dynamic load) when an adult steps on the pedal with one foot and uses it for leverage, but the load-bearing time is short.

3. Low Profile and Anti-Slip: Fixed height after deployment; the pedal surface must have extremely strong anti-slip texture, especially in rainy or snowy weather.

4. Environmental Adaptability: Must be waterproof, dustproof, and corrosion-resistant to cope with the harsh environment under the chassis.

5. Emergency Retraction: Must have a mechanical emergency retraction function to prevent the pedal from jamming when the vehicle loses power.