What is the correct effective length of a safety belt's lanyard?
2 Answers
The effective length of the lanyard should not exceed 2 meters. In special circumstances where a lanyard longer than 2 meters is required, a shock absorber should be added to the lanyard. Safety belt regulations: According to Article 51 of the "Road Traffic Safety Law of the People's Republic of China": When a motor vehicle is in motion, the driver and passengers must use safety belts as required, and motorcycle drivers and passengers must wear safety helmets as required. Function of safety belts: Safety belts are an important protective device for vehicle occupants. They must be fastened during travel, especially when driving on highways. Without a fastened safety belt, occupants could potentially be ejected from the vehicle at high speeds.
I've been studying automotive safety equipment, and the effective length of the seatbelt is a critical point. Generally, the effective length is designed to accommodate people of different body types, typically ranging from 1.5 to 2 meters, allowing the seatbelt to extend over the chest and thigh areas. If it's too long, it reduces protection, potentially causing the occupant to be thrown out during a collision; if it's too short, it becomes uncomfortable to wear. Many vehicles have a locking mechanism built into the retractor, which automatically shortens the length to secure the body upon detecting sudden braking or impact. As an automotive technician, I've seen many cases: if the length is abnormal—for example, too short to fasten properly—the seatbelt may be old and need replacement; if it's too long, it could indicate a retractor malfunction requiring professional inspection. When riding in a car, you should feel the seatbelt pull out smoothly without any snags. It's recommended to regularly visit a shop for maintenance to ensure the safety features remain intact.
