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What are the technical requirements for counting traffic lights from manufacturers in Henan?
Category: Company News
Jun 19,2022
Henan traffic light manufacturer: What are the technical requirements for counting traffic lights?
Traffic lights are suitable for intersections, T-junctions, etc. They are controlled by road traffic signal controllers to guide vehicles and pedestrians to pass safely and orderly. So, Henan traffic light manufacturer: What are the technical requirements for counting traffic lights?
Henan traffic light manufacturer: What are the technical requirements for counting traffic lights?
1. Traffic signal light series products and specifications requirements: Hot-dip galvanized frame lamp poles must meet national standards. Integrated traffic lights are not allowed to be connected with hoops or brackets to ensure aesthetics.
2. Road traffic signal lights must meet the requirements of GB14887-2003 'Technical Requirements and Testing Methods for Road Traffic Signal Lights'. There should be a testing report from a traffic safety product quality supervision and inspection center. The testing report must be submitted within the last 2 years and be valid. Reports without a valid period or exceeding the recommended testing period are considered invalid.
3. The signal light for motor vehicle lanes is a 400mm diameter arrow light, with red, yellow, and green as a group; shell: pure black, aluminum die-casting. Henan traffic light manufacturer
4. Road traffic signal light manufacturing enterprises should provide a national standard ISO quality management system certification qualification certificate or similar standard quality assurance system certification qualification certificate from domestic or foreign sources to ensure stable supply quality.
5. LED tubes need to be four-component, with a lifespan of no less than 50,000 hours. (LED tubes need to be from well-known foreign manufacturers).
6. The shape of the traffic signal light should be basically consistent with the lights currently used in Nanjing. Appearance: The surface of the signal light shell, color film, and sealing ring should be smooth, without material defects, cracks, silver lines, obvious deformation, burrs, etc.
7. All technical indicators of road traffic signal lights (such as protection level, temperature, high and low temperature, vibration, electrical performance, etc.) must be tested by provincial-level or higher product quality supervision and inspection centers and provide corresponding testing reports.
8. The lenses of road traffic signal lights are made of high light transmittance polycarbonate and will not significantly fade within a lifespan of 10 years. Henan traffic light manufacturer
9. The shell structure of road traffic signal lights is required to be made of aluminum die-casting and is open-type; the surface of the shell is spray-painted with black color, aesthetically pleasing and lightweight, making maintenance and installation convenient.
10. All sealing components in road traffic signal lights should be made of silicone rubber to prevent aging and hardening in high and low-temperature environments within 10 years.
What colors do traffic signals have?
1. There are only two colors: red and green. Later improvements added yellow lights. Red means stop, yellow means prepare, and green means go. The reason for using these three colors as traffic signals is also related to human visual structure and psychological response.
2. The human retina contains three types of photoreceptor cells: rods and cones. Rod cells are particularly sensitive to yellow light, while the three types of cone cells are sensitive to red light, green light, and blue light respectively. Due to this visual structure, people can easily distinguish between red and green. Although yellow and blue are easy to distinguish, red and green are the primary colors for differentiation because there are fewer photoreceptor cells sensitive to blue light in the eye. Henan traffic light manufacturer
3. Traffic lights are not set arbitrarily.
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