1. Display information according to road environment and application site, including displaying traffic control graphics and text;
2. The characters are clear, easy to recognize, and meet the national standard requirements;
3. The content displayed on the display screen is clearly visible day and night;
4. The display module is driven by dynamic cross flow to ensure the consistency of brightness and color temperature;
5. Under the condition of light orthographic display panel, the maximum distance (dynamic visual recognition distance) that the observer can directly confirm the display content is ≥ 300 m;
6. The structure is clear and clearly marked to facilitate repair and maintenance work;
7. Low voltage work and safety.