1 All types of urban roads should be set up with traffic signs and markings.
2 Traffic signs and markings should be set up according to road conditions, traffic flow conditions, traffic environment, road users' needs and traffic management needs, and should be coordinated with surrounding facilities and landscape conditions. When the setting conditions change, the traffic signs and markings should be increased, decreased, replaced, and updated in time.
3 The arrangement of traffic signs and markings should be based on the principles of orderly, safe, and unobstructed road traffic, comply with the relevant national standards, and be clear, eye-catching and accurate. Traffic signs should not be obscured by street trees, advertisements, light boxes and other facilities, and should not obscure signal lights or other traffic signs.
4 Traffic signs and markings should be used in cooperation according to the situation, and the information they convey should be coordinated with each other, and should be coordinated with traffic management measures and facilities.
5 When the temporary traffic signs and markings set during the short-term construction and maintenance of roads conflict with the existing traffic signs and markings on the road, the reasons, reasons and validity period shall be explained on the temporary traffic signs. During long-term construction and maintenance, the original traffic signs and markings should be removed or covered, and traffic signs and markings in the work area should be set up to ensure road safety.
6 Temporary traffic signs and markings set during large-scale activities such as road construction, maintenance, and sports events shall be removed in time after the completion of the construction and activities, and the setting of traffic signs and markings under normal traffic conditions shall be restored.
7 When new and rebuilt roads, traffic signs and markings should be designed, constructed and accepted simultaneously.
8 Special agencies should be responsible for the maintenance and management of traffic signs and markings. Regular inspections should be carried out, and if traffic signs and markings are found to be damaged or lost, they should be repaired in time; if traffic signs and markings need to be added, they should be installed in time.
9 The selection of materials for traffic signs and markings should meet the requirements of relevant national standards.

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