GB5768.4-2017
Road traffic signs and markings—Part 4: Work zone
道路交通标志和标线 第4部分：作业区
GB 5768.4-2017 is a current mandatory Chinese national standard for Road traffic signs and markings—Part 4: Work zone. It appears in the Auto compliance cluster with a product safety focus and has an implementation date of Feb 1, 2018.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the setting of traffic signs and markings during construction and maintenance operations on highways, urban roads, and public areas allowing motor vehicle access. It is mandatory for all road work zones in China. It does not apply to permanent traffic sign installations but focuses specifically on temporary traffic control for road maintenance and construction.
Technical requirements
GB 5768.4-2017 specifies the composition of a work zone, which includes the warning area, upstream transition area, buffer area, work area, downstream transition area, and termination area. Manufacturers and contractors must strictly follow these zonal definitions to ensure safety. The standard details the requirements for temporary traffic signs and markings. Notably, the background color for temporary warning and guide signs must be orange or fluorescent orange. It introduces new signs such as the lane reduction sign and detour sign, and specifies that temporary markings should also be orange. It outlines general layout provisions, including speed limits, the use of channelizing devices (like traffic cones and barriers), and nighttime safety facilities. Contractors must ensure that adjacent lane widths meet the minimum requirements or close the lane entirely. Specific layout requirements are provided for different road types, including expressways, two-lane highways, and urban roads. These sections dictate the placement of signs and barriers for various scenarios like lane closures and borrowing opposing lanes.
Testing methods
While primarily a specification standard, it references performance criteria for materials. For instance, the retroreflectivity of reflective sheeting used on temporary signs must comply with GB/T 18833-2012. The standard also specifies dimensional and color requirements for safety equipment like traffic cones and warning lights.
FAQs
What products are regulated under GB 5768.4-2017?
It regulates temporary traffic control devices, including signs, markings, barriers, and channelizing devices used in road work zones across China.
Is GB 5768.4-2017 mandatory?
Yes, all technical content in this standard is mandatory for road construction and maintenance projects in China.
What are the key changes from the previous version?
Key updates include changing the temporary sign background color to orange, introducing new sign types like the lane reduction sign, and adding detailed layout requirements for various road types.
The summary above provides a high-level overview of GB 5768.4-2017. To ensure complete compliance for your products or projects entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 5768.4-2017 today to access all detailed parameters, tables, and layout diagrams.
Applicability hints
- Type
- Safety
- CCS
- R80
- ICS
- 03.220.20
- Competent department
- Ministry of Transport
- Technical committee
- Ministry of Transport