In daily travel, traffic safety has always been a focus of people's attention. According to statistics, 40% of traffic accidents on highways in China occur in adverse weather conditions, 71% of major traffic accidents, and 65% of direct economic losses occur in adverse weather environments.

In complex and changing weather conditions, if speed limit warnings cannot be issued in advance, the safety risks of road traffic will become more significant, and traditional speed limit signs cannot meet the complex and changing traffic needs.
Based on this, Chongqing Chuangdi Technology has launched a meteorological dynamic speed limit warning sign, which integrates multiple functional units such as red and blue flashing lights, dynamic speed limits, and speed feedback. Reducing the total number of road equipment. The speed limit value of the road section can be dynamically adjusted according to the actual traffic situation and meteorological conditions, and real-time speed feedback display can be provided to remind drivers to adjust speed and drive safely.

Product function:

1.The speed limit value is dynamically variable: it receives meteorological warning information from the meteorological monitoring platform/local visibility detector through wireless communication to adjust the speed limit value of the road section in real time and remind drivers.

2.Real time dual color display of vehicle speed: Through microwave radar, it can identify the speed of vehicles within 200 meters and four lanes. When the normal speed wsa detected it displayed as a green dynamic value, and when the speed exceeds the speed limit, it is displayed as a red dynamic value. The overspeed vehicle is recorded and transmitted to the platform at regular intervals for analyzing the overspeed situation on the road section.

3.Red and blue flashing safety warning: When the visibility is below 500 meters, the red and blue warning lights can be turned on to flash and serve as a warning for the road section.

Product feature:

1.Improving safety: Road management departments can adjust speed limits in a timely manner according to weather changes to ensure that drivers are driving within the appropriate speed range and improve the safety of road traffic.

2.Reduce traffic accidents: In the event of accidents, temporary construction, or other emergency situations, meteorological dynamic speed limit signs can quickly respond and adjust speed limits, effectively reducing traffic accidents caused by sudden situations.

3. Improving road traffic efficiency: Traffic management departments can use dynamic speed limit signs based on traffic flow and meteorological conditions to intelligently regulate and guide traffic flow, improve road traffic efficiency, and reduce congestion.

4.Intelligent management: It can be connected to traffic monitoring systems to achieve remote monitoring and intelligent management, providing rich data support and decision-making basis for traffic management departments.

Product parameter:

Main technical indicators of the whole machine:

Product dimensions (height x width x thickness): 2100mm x 1100mm x 160mm;
Working voltage: AC220V × (1 ± 20%) V, 50Hz × (1 ± 4%) Hz;
Power: ≤ 100W;
Working temperature: -20 ℃~+55 ℃, working humidity: ≤ 98% RH;
MTBF：≥20000h，MTTR：≤0.5h， Service life:>100000h;
Protection level: IP65.

Radar speed measurement module:

Speed measurement range: 9-199 kilometers per hour;
Number of monitoring lanes: 2-4 lanes;
Detectable distance: 200 meters;
Reaction time: ≤ 5ms.

Speed feedback LED display unit:

Display mode: composed of 3-digit 7-field digital characters;
Color: Green represents safe speed, red represents overspeed;

Dynamic display LED display unit:

Outer circle display diameter: 1m;
Inner circle display size: 320mm × 640mm, LED pixel spacing 10mm;
Viewing angle: ≥ 30 °;
Full screen brightness: ≥ 5500cd/m ².

Schematic diagram of road section layout: