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See Chinese contents: GB 5768.4-2017 GB 5768.4-2017: Road traffic signs and markings -- Part 4: Work zone
This Part of GB 5768 specifies the requirements for setting of road work zone traffic signs and markings. This Part is applicable to the setting of traffic signs and markings for works such as construction and maintenance of roads, urban roads, and places, squares, public parking lots and other places that are under the jurisdiction of the organization but allow social vehicles. The settings of traffic signs and markings for works such as construction and maintenance of other places where motor vehicles pass can refer to this Part.
