Mechanical Tyre Killer’s teeth consist of three groups of teeth with each group having three teeth. This means, the teeth lower to the ground in threes as the vehicle passes over. After the vehicle’s tyres pass over, the teeth raise up to its default position automatically. If an attempt to pass through the tyre killer from the opposite direction is made, tyres of the unauthorized vehicle will definitely be destroyed immediately, therefore the vehicle moves only a few more meters and is inactivated.