In order to ensure the safety of the occupants in the car, seat belts are the most basic and effective protective devices, and should be used first under any circumstances. However, under certain special circumstances (such as medical reasons that cannot be worn), the following **auxiliary measures** may be considered, but it should be noted that these methods **cannot replace seat belts**, and must comply with local laws and regulations (seat belts are mandatory in most regions)： --- ### **1. Vehicle active safety technology (accident prevention)** -**Automatic emergency braking (AEB)**: Monitor the risk of collision in front of you through radar or camera, and brake automatically. -**Lane keeping assist (LKA)**: Prevent vehicles from deviating from the lane. -**Blind spot monitoring (BSD)**: Reduce the risk of collision when changing lanes. -**Electronic stability program (ESP)**: To prevent the vehicle from losing control. --- ### **2. Passive safety design (protection in accidents)** -**Airbag system**: It needs to work in conjunction with the seat belt, which may cause secondary injury when used alone. -**High-strength body structure**: Such as shrinking the energy-absorbing area and strengthening the cockpit frame. -**Child safety seats**: For infants and young children, they need to be installed correctly (some national laws allow seat belts to be replaced in certain circumstances). --- ### **3. Other auxiliary measures** -**Adjust the seat and headrest**: Keep the headrest flush with the head and the seat backrest upright to reduce the risk of ”slipping off". -**Use non-slip seat material**: Reduce body displacement during emergency braking. -**Low-speed driving**: Reduce the speed on closed roads or special scenes. --- ###**Important Notes** -**Legal risks**: Most countries and regions (such as China, Europe and the United States) require the wearing of seat belts, and failure to wear them may face fines or affect the determination of liability for accidents. -**Medical exemption**: Very few people who cannot wear it for medical reasons need to obtain a doctor's certificate and consult the traffic control department. -**Alternative limitations**: When there is no seat belt, the airbag may fail or cause injury, and the occupant may still be thrown from the seat in the collision. --- ###**Final recommendation** **Please always wear a seat belt**, it is the most proven and effective safety measure. If it cannot be used for special reasons, you should consult a professional organization (such as a vehicle manufacturer or a traffic management department) for legal and compliance solutions. There is nothing trivial about safety, don't take risks.