Drivers and passengers in the car must wear a seat belt, airbag is a passive safety device, only with the use of seat belts, in order to have a real security effect.
Passive safety system protects the passengers in case of an accident such as airbag and seat-belt tightener. Active safety systems help prevent accidents such as ABS and TCS.
For Kala Kunlun and Tarim, two kinds of rock associations, passive continental marginal basin and collision orogenic belt, are developed corresponding to each cycle.