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在美国,城市道路停车限制被细分为禁停区、临时(上下车)停靠区、20min内限时停车区、专用卸载停车区。而将路缘石涂成红、白、蓝、黄不同颜色分别赋予相应的意义,并辅以文字和标志说明,使路缘线增加了更多的功能。司机不用寻找标志,仅凭路缘线的颜色就可以判断是否可以停车——
In the United States, city road parking restrictions are subdivided into a no-stop zone, a temporary (get on / off) stop, a 20 min limited-stop zone, and a dedicated unload parking zone. The curbs painted red, white, blue, yellow, respectively, different colors give the corresponding meaning, supplemented by text and logo, the curb line adds more features. Drivers do not have to look for signs, just by curb color can judge whether it can stop -