A color-coded, three-tier management system to indicate different levels of violation risk among streetside businesses will be implemented citywide this year, the head of Shanghai's urban management and law enforcement authorities said on Tuesday. A database covering 246,900 streetside businesses in the city has already been established, covering their business mode and operators' information. It will be updated this year, with Internet-plus supervision and management systems added, Xu Zhihu, director of the Shanghai Urban Management and Law Enforcement Bureau, told a radio program.