48. The expert from the Republic of Korea introduced GRSP-65-22, explaining that his Government had been trying to reinforce safety regulations on school bus that would secure the traffic safety of children. He added that several regulations have been introduced into KMVSS, such as mandatory installation of stop sign, rear view camera and alarm system when driving in reverse, speed limiter and assistant stairs for getting on/off. He mentioned that last year the Government of Korea had improved the road traffic act so that operation of device in school bus would be mandated to check if all children had gotten off. He explained that the Korean vehicle safety regulations had also been amended to specify requirements on this device and that relevant requirements were added that apply to all kinds of school buses, such as an unloading child confirmation alert system. The additions referred to the requirements of Californian law in the United States of America.