What color is the road sign of Hangzhou Elevated Road?

white characters on a green background. Different from the white characters on the blue background of urban roads, the notice boards on elevated roads are white characters on the green background, which is consistent with the color matching of the road signs on expressways. Hangzhou, referred to as "Hangzhou" for short, is the capital of Zhejiang Province, a sub-provincial city and the core city of Hangzhou metropolitan area. It is the capital of Zhejiang Province and the economic, cultural, scientific and educational center of the whole province, and one of the central cities in the Yangtze River Delta.