Is there a minimum speed limit on urban expressways?

[LeSamantha]

Urban expressways have speed limits ranging from 60km/h to 100km/h Standard characteristics of urban expressways: One main principle of urban expressways is that they have no traffic lights, allowing continuous traffic flow. Therefore, all intersections must be designed as interchanges, whether simple or large-scale, with the specific configuration depending on the related roads. Functions of urban expressways: They reduce the number of at-grade intersections and traffic lights, thereby increasing driving speed, shortening travel time for longer distances, minimizing the mixing of motorized and non-motorized vehicles, decreasing the likelihood of road congestion, and promoting economical and environmentally friendly driving speeds. These features significantly enhance traffic safety and transportation efficiency across the city. They also play an indispensable role in connecting to outbound highways, linking satellite towns, and providing direct access to airports and ports.