Seat belt 1967, Volvo started to install lap belts in the rear seats. In 1972, Volvo upgraded the rear seat belts to a three-point belt. In crashes, unbelted rear passengers increase the risk of belted front seat occupants' death by nearly five times. As with adult drivers and passengers, the advent of seat belts was accompanied by calls for their use by child occupants, including legislation requiring such use. Generally children using adult seat belts suffer significantly lower injury risk when compared to non-buckled children. The UK extended compulsory seatbelt wearing to child passengers under the age of 14 in 1989. It
Prasaṅgika according to Tsongkhapa existing in-and-of themselves - with characteristics or an identity of their own - is seen to be ignorance in this system. In the Gelugpa four tenets system, the object of negation is different for the Madhyamika-Prāsaṅgika than it is for Hinayana schools of Vaibhāṣika and Sautrāntika. Indeed, from the Prāsaṅgika viewpoint, Buddhist and non-Buddhist essentialist schools are not negating the correct object. According to Geshe Tenzin Zopa in "Buddhist Tenets", the various Hinayana schools are negating a number of different objects, but none of them are inherent existence. Geshe Tenzin Zopa states: "From Vaibhāṣika school, they [the Vasiputriyans] assert selflessness/emptiness