it comes with auto-switch, abs braking system, buffering, and auto-locking system, protecting passangers from frontal and rear collision impact at 50 ~ 80 / km / hr, further effectively ensure the safety of the automobile, the driver, and passengers to reduce accident loss 具有自动熄火、自动刹车、缓冲、自锁功能,对来自汽车前、后方的冲击(50~80公里/小时),能起到较好的柔性的安全保护作用,从而有效地保护了汽车和司乘人员的安全,减轻交通事故的损失。