Anhui Expressway Speed Limit Traffic Signs, Traffic Sign Posts, and National Urban Transportation Facilities Selection

Description :

　　Maintenance of road traffic sign posts. 1. The setting (adjustment) of road traffic signs should be completed before the completion and opening of new (renovated, expanded) roads, and the signs related to these new (renovated, expanded) roads in the road network should also be adjusted synchronously to improve their settings. When road traffic conditions change, the setting of relevant signs should be adjusted in a timely manner. Highway number and city road name signs should be used as much as possible to enable road users to understand their route and location. 3. The logo should be regularly cleaned and maintained to maintain sufficient reflectivity and ensure visual recognition. During the use of the logo, it should also be avoided from being obscured by numbers or being affected by street lighting that affects visual recognition. The shape and color of the logo should comply with the provisions of this section during its service life.

　　The spraying process should use outdoor high-purity polyester plastic powder, with a white color (according to user requirements), stable plastic layer quality, no fading, and no peeling. Strong adhesion, resistant to strong solar ultraviolet rays, UV resistant, suitable for cities along the lake and key saline areas. The designed service life ratio is less than 30 years, and the thickness of the traffic sign pole is ≥ 80um, which meets the 3359-83 standard. Provide a spray coating inspection report. Spray protection requirements: The film thickness should not be less than 40um, with strong adhesion, no peeling, and no detachment. The surface is flat and smooth, and the color is basically consistent. Design capability a. Provide a force calculation sheet for the pole body based on the lamp pole shape diagram according to the corresponding wind speed requirements. b. The strength and surface structure of the formed square steel used for the pole body shall comply with the corresponding national standards. C. Seal the lamp post and wrap the top to prevent moisture from entering.

　　T-shaped cantilever traffic sign poles are suitable for the following situations:; 1. Difficulty in column installation; 2. The road is wide and the traffic volume is high. Large vehicles on the outer lane should respect the line of sight of small vehicles on the inner lane; 3. Limited visibility or line of sight; 4. There are requirements for the landscape. Portal type traffic sign pole - The portal type traffic sign pole is a sign installed on the portal, and the height of the lower edge of the sign above the ground should be greater than the clearance height specified for the road. Portal style traffic sign posts are suitable for the following situations: 1. Multi lane roads (leading to three or more lanes) require separate indication of each lane. 2. Large vehicles in the outer lane obstruct the view of small vehicles in the inner lane due to high traffic volume; 3. Traffic remains in sections where interweaving, diversion, and rivers occur at higher operating speeds, such as: building a close distance sign at an interchange, setting up dense signs at the interchange main line area where the highway intersects with the highway, etc; 4. Due to space limitations, it is difficult to install column and cantilever structures; 5. The exit ramp is on the left side of the traffic response; 6. There are requirements for the landscape. Attached traffic sign post: The sign is attached and installed on the overpass and nearby structures, and is divided into two types: attached on the roadway and attached on the road according to the position of the attached layout.

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• Anhui Expressway Speed Limit Traffic Signs