When a collision occurs, the shoulder belttightener compensates for "belt slack" and "film-reel effect" by retracting and tightening the belt strap.
发成碰撞时，通过牵引和张紧安全带圈带，肩带张紧装置补偿安全带松动和胶片卷轴效应。
2
Passive safety system protects the passengers in case of an accident such as airbag and seat-belttightener. Active safety systems help prevent accidents such as ABS and TCS.