LED variable speed limit signs
LED variable speed limit signs are typically installed on urban road sections requiring vehicle speed restrictions, particularly at competition venues, highway entrances, and high-traffic areas. In response to slippery roads and sudden fog during rainy weather, traffic management departments have actively adopted advanced technologies to conduct large-scale upgrades and transformations of traffic management auxiliary facilities, significantly reducing traffic congestion under adverse weather conditions.
Product Structure
1.The product chassis conforms to the national standard paint colour card No. 510 blue-grey;
2.The base of the product display is matte black. with a brightness factor of less than 0.03;
3.The graphic outer ring of the display appears red when illuminated and black or colourless when unlit;
4.The digital characters of the display emit yellow light when illuminated and remain black or colourless when off.
5.The product’s viewing angle exceeds 30 degrees;
6.The static visual distance of the product is greater than 250m;
7.The dynamic visual recognition distance of the product exceeds 210m;
8.Each pixel on the display screen emits light uniformly. with the unevenness of normal luminous intensity between pixels across the entire screen being less than 5% under rated working current conditions;
9.The display pixel driving mode employs static constant-current drive.
Technical Performance
1.Display content: Capable of showing up to three digits (inclusive) and other content. such as 5. 10. 15. 20. 30. 40. 50. 60. 80. 90. 100. 110. 120. etc.. with full on/off control;
2.Signal control function: Integrates with intersection traffic signals to implement LED variable speed limit sign control based on traffic flow characteristics; Remote control function: Allows real-time remote adjustment of display content via the command centre platform and flexible group display according to actual conditions;
3.Dimming function: Automatically adjusts display luminous intensity according to ambient light levels or implements timed dimming control via the command centre platform to prevent glare formation at night when illumination is low. thereby avoiding interference with visual information reading.
Product Parameters
1.Dimensions: 1600mm × 1600mm × 130mm;
2.Rated working voltage: AC230V/50Hz;
3.Rated power: 200W;
4.Enclosure protection level: IP65;
5.Product features: Displays text and images. with 16 pre-set programmes for optional playback; indoor and outdoor specifications available;
6.Common dot spacing: 16mm. 20mm. 25mm. 40mm. etc..
The Public
Mobile terminal